TRERIERAET ERI ED ED LOTTE er eR TTF resem nre ET eT HIP St er NEN ETE ENN Eretrhmb epee ANT IMNP eR EINN TERMI NT STINE CTEM TE gortae MCN eRe MENE EMEDCE Yee UHED PENNE TH EMAEwORE TRS EV ESNet ACewecetT tee eseeTseeeRt set OO UP EtOCEStAORTE SEER, ae ° : SS2Sansrerdtacdr the ; ; - — - om i ~ - — = ~" - =" > ~ _ < i é Ww 5 =e SSS med = eg — _ 7 ~ =—s= = a eo — eee = Digitized by the Internet Archive in 2008 with funding from Microsoft Corporation http://www.archive.org/details/catalogueoflizarO2brituoft CATALOGUE OF THE Ppl 7 An ike Des IN THE BRITISH MUSEUM (NATURAL HISTORY). SECOND EDITION, BY GEORGE ALBERT BOULENGER. VOLUME II. IGUANIDA, XENOSAURIDA, ZONURIDA, ANGUIDAL, ANNIELLIDA, HELODERMATID®, VARANIDA, XANTUSIID®, TEIIDA, AMPHISBAINIDA. LONDON: PRINTED BY ORDER OF THE TRUSTEES. 1885, PRINTED BY TAYLOR AND FRANCIS, RED LION COURT, FLEET STREET. ( Uf / WH tow a ~ £4 O 0-10 9 va Gg Lia DR 665 3 PREFACE, Tue manuscript of this second volume of the ‘ Catalogue of Lizards’ was so far advanced at the time of publication of the first, that it has been possible to issue both in the same year. The present volume contains an account chiefly of Lizards of the New World; and among the contributions to our collection, the donations made by Messrs. Salvin and Godman and by the U.S. National Museum are the most extensive and important. Our best thanks for communications and the loan of specimens are due to Dr. Strauch, Director of the Museum of the Imperial Academy of St. Petersburg, Professor Vaillant, of the Muséum @Histoire Naturelle de Paris, Dr. Boettger, of the Senckenberg Museum, and M. Lataste. ALBERT GUNTHER, Keeper of the Department of Zoology. British Museum, N. H., Noyember 15, 1885. INTRODUCTION. Tuts second volume contains an account of the families Iguanide, Xenosauride, Zonuride, Anguide, Anniellide, Helodermatide, Va- ranide, Xantuside, Teude, and Amphisbenide ; it is therefore chiefly devoted to American Lizards. The increase in the number of species known, and of species and specimens represented in the British Museum, since the publication of the general works by Duméril and Bibron and by Gray is shown in the following tables :— Number of Species characterized Families. by Dum. & Bibr. by Gray. in present volume. HemaAM Ge... 2 o's see: 94 126 293 Xenosauride ...... — — 1 Zonuride .......... 6 8 ‘14 IANOUIGD: 2 36. c's se 17 25 44 Anniellide ........ — — 2 Helodermatide .... 1 if a Waranidee fo eee ois a3 12 23 27 Mantusiidee ........ — — 4 ANSIVG Hotes ceiDream = 29 44 108 Amphisbeenidee.... .. 15 15 65 Total... 174 242 561 VOL. II. b vi INTRODUCTION. Number of Species and Specimens in the British Museum in 1845. 1885. a Gs —— se Species. Specimens. Species. Specimens. Teuanide <..5 2... 83 240 211 1358 Xenosauride .... — — 1 4 ONUTIG. 3... 2. 2 6 17 10 53 FAM OUTS. noe corea 16 38 26 147 Anniellide ...... — — 1 1 Helodermatide .. 1 2 2 8 Waranide 2. ccc 21 87 24 256 Xantusiide ...... — — 1 7 GINS wens teste derate 21 57 69 306 Amphisbenide.... 9 21 30 145 Lotal.. 157 462 375 2335 G. A. BOULENGER. Department of Zoology, November 13, 1885. SYSTEMATIC INDEX. LACERTILIA. Subord. I. LACERTILIA VERA 1. Chameeleolis, Coct. 1. chameleontides, D. § B. 2. Xiphocercus, Fviz. 1. valenciennesil, D. § B... 2. heterodermus, A. Dum... SS ATIONS DIGUA. «iiaebinle s v.0.0 . equestris, Merr........ MUICOPGI 2), 6 Bs.\.).in ce« ©All, WGA 5 aca edwardsii, Merr. ..... gundlachil, Péirs........ . cristatellus, D. §& B.... stratus, Copel 2" ...01* homolechis, Cope ..... _ gingivinus, Cope....... leaching Bs cise.=: marmoratus, D. § B.... pallivator,-). 6B... s<. Poranamt; Gray 2.06... moistichus, Cope ....35). BC VPOLES. COC yee) akc es sclirmellus, Cope... >... BPRCULIS, ELAM. Ts. «swiss PPLE OE US). 2)5 s< raise ai prichardil Ge... 4. < plinestus, Dauds:... +... . lineatopus, Gray ..... 5 ECs 0 Die 2 aaa . vermiculatus, D.§ B. .. SOV SIAMA hCOCE® fates +. 6, symmetrica, Baird .... 218 1. giganteus, Smith...... 7. lateralis, Blgr......... 214 2, tropidosternum, Cope.. 8. auriculata, Cope ...... 214 3. cataphractus, Bote .... 9. bicarinata, 4. Dum. 215 xd. ccordylusyiae eee 10. irregularis, Fisch....... 216 5. polyzonus ‘Sister. 49. Sceloporus, Wregm. 216 6. pustulatus IRE S eee * 1. torquatus, Wregm. .... 219 7. capensis, er ee 2. serrifer, Cope ........ 221 | 2. Pseudocordylus, Smith... 3. acanthinus, Bocourt 221 1. microlepidotus, Smith 4, formosus, Wiegm. .... 222 | 3. Platysaurus, Smith ...... 5. yarrovii, Cope........ 223 1. capensis, Smith ...... 6. ornatus, Baird........ 224 2. guttatus, Smith ...... 7. dugesii, Bocourt...... 224 3. torquatus, Pérs. ...... 8. melanorhinus, Bocourt. 225 | 4, Chamesaura, Schn. ..... 9. zosteromus, Cope .... 225 1. seenea, Wiegm......... X10, spinosus, Wiegm. .... 226 5). anonina sks eee X11. undulatus, Daud. .... 227 3. macrolepis Cope biseriatus, Hal ce). f 229 Poo Lhe #12, consebriua Bog GG... 229 F 18, gratiosus, B. § G. 230 x Fam. 9. ANGuIDa. 14. couchit, Baird... 2... 231 | 1. Gerrhonotus, Wiegm. .... 15. grammicus, Wiegm. 231 1. oaxacse, Gthr. o.eeeaer 16. microlepidotus, Wiegm. 232 2. gramineus, Cope...... 17. wneus, Wregm. 233 3. deppil, Wiegm. ...... x18. scalaris, Wiegm....... 234 4, teniatus, Wregm. 19. pyrrhocephalus, Cope.. 255 5. vasconcelosii, Bocowrt. 20. chrysostictus, Cope.... 285 6, fimbriatus, Cope ...... 91. variabilis, Wregm. .... 236 7 puritus, (Cope. ec cne Dee SIMITCTUS MCOME) ty ake ct-e 237 x 8. imbricatus, Wiegm. O35 TULVUS; BUCOUIE, y..000:i 23 9. rudicollis, Wiegm. .... 24, squamosus, Bocowrt 238 10. planifrons, Bocourt.... 25. utiformis, Cope ...... 238 11. ceruleus, Wregm. .. marmoratus, Hall..... 216 12. king, Gray epee 50, Phrynosoma, Wiegm..... 239 | * 18. liocephalus, Waegm. X1. douglassii, Bell ...... 240 14. modestus, Cope ...... 2. OTbiculanes lisp. tech eed 24] 15. rhombifer, Pérs. ...... 3. boucardii, Bocourt .... 248 1G. antauges, Cope........ x 4. coronatum, Blainv..... 243 17. obscurus) Gthrs <- eee DngOSiO WOOPEY: ayexdsuc) nea 244 18. monticola, Cope ...... Girecale,iGor. alee il eis 245 19. moreletii, Bocourt ... «7. cornutum, Harl....... 245 | 2. Cebieuaey Dad diversi 8, maccalli, Hall........ 246 » pus, Ball. epee 9, platyrhinus, Gu....... 247 x : ventraliste/i7.teei ioe 10. modestum, Go. .. 248 3. attenuatus, Baird ... 11. braconnieri, Bocourt .. 248 x 4, gracilis, Gray........ 12 taurus, Duges ...- omen cto 5. koellikeri, Gthr. .. SYSTEMATIC INDEX. Page 3. Diploglossus, Wiegm. .... 254 1. monotropis, Wiegm. .. 285 2. bilobatus, O’Sh. ...... 286 8. fasciatus, Gray ...... 287 4, millepunctatus, O’Sh.,, 288 5. rugosus, Cope ........ 288 6. phoxinus, Cope ...... 289 ie StbIabUs GTAYs ars. = 289 8. oeciduus, Shaw ...... 290 9. hewardii, Gray ...... 291 10. impressus, Cope ...... 291 11. microlepis, Gray...... 292 WO Mowenlt eA Gu Bia... - 292 13. steindachneri, Cope.... 293 TAR pagtee, COCE. sm n02 os 293 be pleu,2D0G Bb. ..3..:.. 294 AP Sauresia, GAY ..565. 600 294 1. sepoides, Gray ...... 295 5. Panolopus, Cope ........ 295 1. costatus, Cope........ 295 6. Ophiodes, Wagl. ........ 296 HE RUPIALUS WSU ts celes oss 296 2. vertebralis, Bocourt .. 297 Me NCAOUIS |Lysis. siaays) vlare® val 297 EROS O05 chou ee'e0) 297 Fam. 10. ANNIELLID&. Tee Amniell a Grayie. «<<< ese 299 1. pulchra, Gray........ 299 2. nigra, Fisch. .....++. 300 Fam. 11. HeELopERMATID. 1. Heloderma, Wregm....... 301 1. horridum, Wiegm..... 801 2. suspectum, Cope...... 302 Lanthanotus, Stdehr. .... 302 1. borneensis, Stdchr. .... 302 xX Fam. 12. VARANID2. AV arAnUsS, MME... cece6«> 304 x 1. griseus, Daud......... 306 2. albigularis, Daud. 507 3. ocellatus, Rupp. ...... 308 4, exanthematicus, Bose .. 308 x 5, flavescens, Gray...... 309 6. bengalensis, Daud. .... 310 7. nebulosus, Gray ...... Bll Ser OTHy, DiGi mise creates 312 9, dumerilii, Schleg. .... 312 10. rudicollis, Gray ...... 313 11. salvadorii, Ptrs.§ Doria 314 X12. salvator, Law: ...... 314 oe nuchalis, Gtk. .... +. « 315 Page 14. cumingii, Martin 316 15; torianus, Pirs,....1. 37.- 316 16. kalabeck, Less. ...... 316 x17, indicus, Daud... ..-- 316 il Seem OTICUS ela:oteleiclel wool > 317 OS varius SG20) m0 ee clssi- 319 20. giganteus, Gray ...... 320 21. gouldii, Gray ........ 320 22. prasinus, Schleg....... 321 23. kordensis, Meyer 322 24, punctatus, Gray...... 322 25. timorensis, Gray...... 823 x26, acanthurus, Blgr. 324 27. caudolineatus, Blgr. 324 1. Lepidophyma, A. Dum... 8 1. flavomaculatum,d.Dum. 2. Xantusia, Baad 1 2 3. Cricosaura, Gundl. § Ptrs. eRUYPLCAs Gack on nesteere 1 1. Tupinambis, Daud. Fam, 13. XANTUSIIDZ. SEVIQUMS PEGI woe lelciesat . Yiversiana, Cope eens, shes » Fam. 14, Trrrp®. 1. rufescens, Gthr. ...... 335 ADs teguiiccims, Li. j./e erste 335 3. nigropunctatus, Spi .. 337 2) Dracsena, aud. aeen sens 337 1. guianensis, Daud. 338 3. Centropyx, Sr .s.....). 339 Apestrla tus 2000. .%..< ace). 340 2. intermedius, Gray .... 340 3. cal@aratus, Su. artea 341 4, pelviceps, Cope......... 342 5. altamazonicus, Cope.... 542 4, Monoplocus, Gthr. ...... 343 Ie clones CHO 5 oa oo o6 c 343, Op AmelvaseCUvi crs siceet sie 3435 I. bridgesu,. Cope s..0: 2.00 345 2, septemlineata, A. Dum. 346 SH MeRuLV a, LAChLon. ratterol 347 4, undulata, Wiegm. 047 5. edracantha, Bocourt 349 6. lineolata, D. § B. 349 Vo beenlura, Comes setaevaciels 350 SpPolops,, COME raviereyctres 350 9. bifrontata, Cope ...... 351 x10. surinamensis, Zaur..... 352 Th, pleil, DG sB. occo0eh 354 MDS TUS Pe enOf Las tersseisisee 354 5. vittipunctata, Cope .... 555 14. chrysolama, Cope 355 15. thoracica, Cope ...... 396 SYSTEMATIC INDEX. xii Page i6saubert, Cocks ce. sce 356 Wife GlosIbG (Cn) Goo sac ac 357 IS, Goran), (CNP son 4a060 358 19. punctata, Gnay........ 309 6. Cnemidophorus, Wag. 360 Jmurinus, Lawns; .... 361 2eespeuti, Blgr. os aoe ele 362 3. lemniscatus, Daud. .... 368 4. mipricolor, Firs. \2.- 6. < 364 x 5, sexlineatus, less seal. 364 6. mariarum, Gthr. ...... 368 7maximus, Come. ice. 369 8. guttatus, Weegm....... 370 9. immutabilis, Cope .... 3870 10. deppii, Wiegm......... 371 11. hyperythrus, Cope .... 371 12; ocellifer, Spr 2...4. 372 3. multilineatus, Phil. .... 375 14, lacertoides, D. § B. .. 873 15. longicauda, Bell ...... 3/4 16. heterolepis, T'sch....... 375 perplexus, B. § G. .... 860 AMOTMALUS) LLC. nenetelens 360 decemlineatus, Hall.... 860 7. Callopistes, Grravh....... 375 x 1. maculatus, Gravh. .... 375 2. flavipunctatus, D. § B.. 376 8: Wierodon, 2 nG.be. nee 377 1. guttulatum, D. § B. .. ¢ Dacalliscelis,1Cope 0 mc 378 OrMems valerie wits een 378 1. teyou, Daud. ........ 379 10. Crocodilurus, Spiz ...... 380 1. lacertinus, Daud....... 380 11. Neusticurus, D. § B. .... 381 lEsbicarinatus, els..2e se ee 381 2. ecpleopus, Cope ...... 382 12. Alopoglossus, Blgr....... 383 Copii Blgrs tae tae 383 2. carinicaudatus, Cope .. 384 3. buckleyi, O'Sh. ...... 385 13. Leposoma, Spaz ........ 386 1. seincoides, Sper ...... 386 2: dispar, ehursae wa. sene 387 14, Loxopholis, Cope........ 387 i, rugiceps, Cope? .=...t.ni 387 15. Pantodactylus, D. § B. .. 388 1. schreibersii, Wregm. 388 16, Arthrosaura, Blgr. ...... 389 1. reticulata, O’Sh. ...... 389 17. Prionodactylus, O'S... ... 390 Hi garomlus, were. eee oo: 2. oshaughnessyi, Blgr. .. 392 3. quadrilineatus, Boettg. 598 4. manicatus, O’SAh....... 393 5. vertebralis, O’S2....... 394 Page 18. Cercosaura, Wagl. ..... 395 1. ocellata, Wagl..,...... 395 19. Placosoma, Tsch........ 396 1. cordylinum, Tsch. .... 397 20, Anadia, Gray ......... 398 l..ocellata, "Gray ose... 398 2. rhombifera, Gthr. .... 399 3. metallica, Cope........ 400 4. bogotensis, Ptrs....... 400 21. Hepleopus, D. & B... 2... 401 1. gaudichaudu, D. § B... 401 A MIMS, JAH, 55 nod odenc 402 22. Pholidobolus, Pérs....... 403 Jemontiun, Pins ssn 403 23. Euspondylus, Tsch....... 404 1. strangulatus, Cope .... 405 2. maculatus, Tsch....... 406 3. acutirostris, Pirssceas.. 407 4, guentheri, O'Sh. ...... 407 24, Argalia; Gray eee eee 403 1. marmorata, Gray...... 408 25. Oreosaurus, Pérs......... 409 1}, oculatus iO; Shecanen 410 2 WUCTUOSUS, E27Say eee 410 3s Suna 2275 ae ee 411 4. petersii, Boettg. ...... 411 26. Proctoporus, Tsch. ...... 412 1) pachyarus,)/schsaeneee 412 2. unicolor, (Gray yee see 413 3. simoterus, O’Sh. ...... 414 4, meleagris, Blgr........ 415 27. Scolecosaurus, Bigr. 416 1 Cuvier; Miz eee 416 2. pallidiceps, Cope ..... 417 28; Cophias,-Fitz. cei. Ghee 417 1. tridactylus, Daud. 418 2. heteropus, Boettg. .. 418 3. flavescens, Bonn...... 418 4, dorbignyi, D. § B..... 419 heteropus, Licht. ...... 417 29, Ophiognomon, Cope 420 1. trisanale, Cope....... 420 2. abendrothii, Ptrs. 421 5. vermiforme, Cope 421 30. Heterodactylus, Spir 422 1. umbricatus, Spiz ..... 422 25 Lund, Fe: 2a 423 31. Perodactylus, R. § L. 425 1. modestus, Rk. § L. .... 423 oa. [phisa, Gadi apes eet 424 1: elegans, \Grrayin. ck 424 33. Tretioscincus, Cope..... 425 1. bifasciatus, A. Dum. .. 425 2. leevicauda, Cope ..... 426 34. Micrablepharus, Boettg... 426 1. maximiliani, R. & L... 426 35 SYSTEMATIC INDEX. Page . Gymnophthalmus, Merr. 427 1. quadrilineatus, Z. .... 427 2. sumichrasti, Cope...... 428 3. luetkenii, Bocourt 429 4. pleii, Bocourt ........ 429 x Fam. 15. AMPHISBENIDZ. A. Prosphyodontes. I Chirotes, Cu: . icc. 3 43 1. canaliculatus, Bonn. .. 452 eS LAMUS He VV.AGes «cle etic ore 6 33 1. cinereus, Vand. ...... 453 2. strauchii, Bedr. ...... 43 3. bedriage, Bigr. ...... 455 3, Amphisbeena, Z......... 455 WtolioImosa, Li.) vce vesie 437 Deralloarelane Welelsne slordevercisrs 438 3. beniensis, Cope........ 43 4, subocularis, Pérs....... 440 OPGEDLOLUIIsLs.) Danese sales 440 6. leucocephala, Ptrs. .... 441 7. mertensii, Strauch .... 441 8. vermicularis, Wagl..... 441 9, darwinii, D. §& B. .... 442 10. albocingulata, Boettg. .. 445 11. angustifrons, Cope .... 443 occidentalis, Cope...... 445 122 plumbea, Gray....-ss. 443 13. gracilis, Strauch ...... 444 14. steindachneri, Strauch... 444 Mowemild en eheise cscs 2cee 445 MGR cveca Cu ae wc varses 445 RCUDANGe EUS, 50a sree ¢ 446 WSs yiolaces, Urs... 5oaks 446 19. quadrifrons, Pérs. .... 447 DOMETAUSSI PUrSs aii osae 447 mie leucura, Di GB. ...... 447 22. muelleri, Strauch...... 448 23. leonina, F. Mill. ...... 448 24. liberiensis, Blgr. ...... 449 25. fenestrata, Cope ...... 449 26. punctata, Bell ........ 450 27. brasiliana, Gray ...... 450 Page 4, Anops, Bell .......+.6-: 451 epimers eH Wate neve ts 451 2. africanus, Gray ...... 452 5. Geocalamus, Githr. ...... 453 1. modestus, Gthr. ...... 453 6. Monopeltis, Smath ...... 453 1. capensis, Smith ...... 455 2. sphenorhynchus, Ptrs... 455 3. welwitschii, Gray .... 456 4, guentheri, Blgr. ...... 456 6. galeata, Hall, ..2 2... 457 6. dumerilii, Strauch .... 457 (CANS erads Woanotot 457 8. magnipartita, Ptrs..... 458 9. anchietew, Bocage...... 458 LOS, ug laris UPC eiss. sit. es 459 11. koppenfelsii, Strauch .. 459 in Ruhineura, Cope. vance. 459 1. floridana, Baird ...... 460 8. Lepidosternon, Wagl..... 460 1. microcephalum, Wagl. 462 2. phoceena, D. & B. 463 3. strauchii, Boettg....... 463 4, infraorbitale, Berth..... 463 5. rostratum, Strauch .... 464 6. petersil, Strauch ...... 464 7. polystegum, A. Dum... 464 8. crassum, Strauch ...... 465 9. wuchereri, Pirs. ...... 466 10. guentheri, Strauch .... 466 Ll; beettgert, Blgr. <2... 466 UPN attines BOCkLG. “ats o> «1 467 13. boulengeri, Boettg. .... 467 14. onychocephalum, Boettg. 468 15. octostegum, A. Dum... 468 16. scutigerum, Hempr..... 469 B. Emphyodontes. 9. Trogonophis, Kaup ...... 470 x 1. wiegmanni, Kaup .. 470 10. Pachycalamus, Gthr..... 471 ME AARC manond oo bot 471 LIS Agamodon, Pian. ctcien +ok 471 1. anguliceps, Pérs....... 472 siaiies wes Pere deck we ait x y- Pc i oa oe Sit , vs 7 _ 7 ; ; on v : ‘eet ve, 6 ; bir aa ery ot Oe 7 ae " ree "' ss a : Pst spp ont ts ed Hi as ) ee @- ae 8 : ; ott PAG, Sis, ad a ' a pos ne ‘ ¥? =) — ec Ly Cs Revel. 9 a ex ¢ my 7 Poth s e © at ee ya ¢ i ‘= =n a 7 te wk : [ 7 = 7 oo L yes * ; t ) i 7 1 te 2 > a Pp 7 ee +h a aay ¢ ’ i ——_ j f i i mare hi y a ba me pit wn Ria 1 sp Dy y's eee : , r a a ee ye ree ih i : - ee e a" 7 59 7 ‘ y : : 7s ‘ 7 \ — a _ y 4 f 7 ’ _ = ; : 4 " \ A 7 J ? i) fee i) | i) > aos fi 416 ; 7 H : ee+ oka ou sa ial | oe eS |e ie , ny F TT ‘ > * ; as “30 er AP: ; | 7 ! "4 ew: “80 Da diag ae | : we ee ¢ 4 ae ‘ j i? ’ ‘ i ao Are ~~ ' i! t | > ‘ aogee a a z) CATALOGUE OF LIZARDS. Order LACERTILIA (continued). Suborder I. LACERTILIA VERA (continued). Fam. 6. IGUANIDZ, Ieuaniens, part., Cuvier, Regne Anim. ii. 1817. ' Ascalabotee, part., Merrem, Tent. Syst. Amph. 1820. Pneustoidea, Agamoidea, part., Litzinger, Neue Classif. Rept. 1826. Iguanide, Gray, Phil. Mag. (2) ii, 1827. Pachyglosse, part., Wagler, Syst. Amph. 1850. Dendrobate prosphyodontes and Humivagee prosphyodontes, Wiegmann, Herp. Mex. 1854. Tguaniens pleurodontes, Duméril § Bibron, Erp. Gén. iv. 1837, Corythophanz, Hypsilophi, Ptychosauri, Polychri, Dactyloz, Dra- contur, Heterotropides, Steirolepides, Doryphori, Phrynosomata, Fitzinger, Syst. Rept. 1843. Iguanide, Gray, Cat. Liz. 1845. Anolide, Iguanidee, Cope, Proc. Ac. Philad, 1864. Tguanidee, Boulenger, Ann. § Mag. N. H, (5) xiv. 1884. The Lizards of this family resemble very closely, in external as well as internal characters, those of the preceding, or Agamide, from which they are distinguished by the pleurodont dentition. The distinct heterodontism, so frequent in the latter family, is exhibited VOL. II. B 2 IGUANIDE. to a slight degree by one genus only (Uraniscodon) ; in all others the teeth are subequal in size, and if, as is usually the case, the lateral ones differ from the front ones, the change is gradual. In all genera save Amblyrhynchus, Conolophus, and Phymaturus, the anterior teeth are conical ; the lateral ones are also sometimes simply conical or with obtuse crowns, but more frequently compressed and tricuspid ; in Jywana and Metopoceros the crowns are finely denticu- lated on the edge. In the above-named highly remarkable genera Aimblyrhynchus, Conolophus, and Phymaturus, all the teeth are deeply trilobate, or flower-de-luce shaped. The shafts of the teeth are constantly long and cylindrical, and hollowed out at the base. Pterygoid teeth are present in many species; I have not employed this character for the distinction of genera unless accompanied by others. Chameleolis is one of the few Lizards in which teeth are inserted on the palatine bones. The skull does not differ in any important point from that of the Ayamnide. However, dermal cranial ossifications, as, for instance, the horn-like tubercles of Phrynosoma, may be present. A supra- orbital arch, such as has been noticed in the Agamoid genus Lyrio- cephalus, occurs in Corythophanes and Phrynosoma. The clavicle is slender proximally, except in the genera Basiliscus and Lemancetus. In describing the Jguania as having the ‘clavicle with simple proximal ends,” Cope* remarks in a footnote that ‘‘ the transverse limb of the mesosternum [sternum, nobis] extending to the angle of the clavicle, gives an appearance in some of the Bantsane of a proximal foramen.” I had hitherto held this opinion to be correct, but now find, on careful examination of the pectoral arch of the types alluded to, that the clavicle is really loop-shaped, and that those two genera constitute an exception in the family Zgwanidw, which is cha- racterized by a non-dilated clavicle. The interclavicle is T- or anchor- shaped, exceptin Phrynosoma, in which the longitudinal limbis absent. The sternum is frequently perforated by a fontanelle. A more or less complete system of ossified or tendinous abdominal ribs is deve- loped in many genera, in some (Anolis, Polychrus, Liosaurus, &c.) to the same extent as in the Geckonide. The tongue is thick and villose, entirely fixed to the floor of the mouth, or slightly free anteriorly, and not or but very feebly nicked. The pupil of the eye is round, and the eyelids well developed. The tympanum is distinct, except in Holbrookia. Femoral pores exist in all North-American genera, and are absent in the great majority of the South-American. In some of the latter the males have a series of pores on the anterior border of the vent. The scaling of the head and body varies extremely, and gular appendages, crests, and other ornaments are not unfrequent. The upper head-scales are usually small, but in some genera assume a * Proc. Ac. Philad. 1864, p. 227.

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