tu 



lOCAXlH.K. 



IOUANID.E. 



S16 



1. /W*rs.-Femoral pores dirtinct; scales of back and sides 

 equal F. murmarmlm*, theCamaleao; Brazil and West Indies. 



1 ssTfeii.-Feaoral pores none; scales of sides larger. & 



a. tVeenyJUa Scales circular, smooth; tail-end revolute. V. 

 issVsi f. Brazil 



dad; head 4-eided. E. FHtiyerii, 



' Ecphymotas; Brazil wWnJafw. the Waved Kcpby- 

 Brazil M. ttaswasfru, the Blunt-Headed Ecphymote; 



; . 



4. 



Mexico. cmlmtru, the Rcpbytnote ; Brazil 



& a*aa*ii. Scales rhombic, keeled ; head dilated nd rounded 

 behind. A fcjr.j>, the Long-Lefigrd Licmanctus ; Mexico. 



A Kottril lateral; tow simple or fringed; back coated; inter- 



parietal plaU muall 

 Femoral i 



pores distinct 

 Throat-pouch large, compressed ; tail compressed. 



6. lyutum. Scales of back moderate ; throat-pouch toothed in front 

 /. tmlrrfmlata, the Common Iguana; West Indies. /. rAiao/o/Aiu, the 

 Khmoosros Iguana ; St ChrUtopher's, West Indies. /. delicalunma, 

 the Naked-Necked Iguana ; Tropical America. 



7. Alofonatm*. Scales of back very minute; throat- pouch simple 

 in front A. Kcurdi, Aloponotus ; St Domingo. 



Throat rather dilatable, with a cross-fold behind ; middle 



hind toes toothed on the outside, 

 t Tail compressed with uniform keeled scales. 



8. AwcUfcnAM. Head-shields flat; femoral pores 1 -rowed. B. 

 /MOO/M, the Banded Brachylophe ; South America. 



V. Jrefstaveerot. Head-shields flat; central frontal with a horn; 

 femoral pores 3-rowed. tl. connUut, the Honied Iguana; St 



: 



10. TV* 



10. Trtdkfctfliattu. Head-shields con rex ; hinder outer toe short 

 r. MkrMta/w, the Rough Head ; Cbariet Island, Galapagos. 



1). OrwopWiML Head-shields conical, Tery rugose; the outer 

 hinder to* elongate. O. crutaiui, the Marine Oreocephalus; Oalapagoa. 

 ft Tail with ring* of Bpinoae scales. 



11 C>c/ra. Head-abield. small, with 2 rows of Urge shields on 

 the muzzle ; tail compreawd. C. M'Ltafii, M'Leay's Cyclure ; Cuba. 

 f. uMlu, the Clouded Cyclure ; Mexico. C. CoUti, Colly's Cyclure ; 



13. OrvoMnro. Head- and muzzle-shields small, uniform ; tail 

 roundish, crested. C. actnAur*, Shaw's Ctenoaaure; California, 

 West Indies, Tropical America. C. yerrtnota, Weigmann's Ctenosaure ; 

 Mexico. 



/.'yo/ioMnriu. Head- and muzzle-shields small, uniform ; tail 

 diprssMil, with 6 longitudinal spinose ridges. . quiiiyutcarinattu. 

 the Armed Lizard ; Demerara. 



6. Femoral pores none. 

 Hiader toes fringed on the side, outer webbed at the base; 



throat with a cross-fold behind. 



16. Auifonu. Head elongate, with an erect crest behind ; the 

 back and tail with a fin-like crest B. American*!, the Basilisc; 

 Tropical America, Guyana. 



1 OrrfOMlmt. Head elongate, with a low compressed crest 

 behind; back and tail with a low toothed crest C. vittaiMt, the 

 CorrtlwoU; Honduras. 



r. nwasMdocfydu. Head short, with a low toothed crest, convex 

 *S U * A j' ** ""I Wl with a low toothed crest T. lilineatiu, the 

 Ldgtd-Toe ; Sooth America. 



" Toss all slender, simple, or slightly serrated on the sides ; 



outer hind toes quite free ; head short 

 Oeotpwt coMflissiJ and produced behind ; throat-pouch compressed. 



toothed in front 



i thro "- pouch imple - c 



tt Occiput convex ; throat with a cross-fold behind. 

 tO, AMUM-TaJI round, not crested ; toes all simple. K. rkom- 



1 : biDdtr ""e^fy r*ed on 

 'A warci/,W, the Eye-Browed Ophryoesea ; America. 

 NosWl superior above the eya-ridg., aubapioal; toes dilate,! 

 the b-t ioint but one, ery unequal, and unit..) 

 rt ti. Use; throat-pouch distinct, largely dilaa- 



8 > "i 



Scales of belly granular. 



tt. Oaai<rtfofu.-Back and tail with a bony crest; toes dilated. 

 C ftnwMfe.., the Cuban Chaml>li,; Cuba. 



. Scale, of the belly imbricated, flat 



oC J d '. UUd ; Uil With **">' * 

 JT . ,f ^ Cen/ "' Biflorf '" An< ^"; 



SfSSHt. ***"***&*** Anollsj West Indies. 

 21. />.cf^._Tos. dilated; back and tail with a crest of com 



pressed scales. D. eyutttrii, the Equestrian Auolu; Cuba. D. 

 <lrar,lni, Edwarda's Anolis; Jamaica. 



25. fUxnotamnu. Toes dilated ; back with a slight fold formed of 

 two series of small scales ; rostral plate horizontal ; nose produced. 

 R. yracilu, the Sharp-Xosed Anolis ; Bahia. 



26. Anolita. Toes dilated; back riinple, or with a slight crest 

 formed of two series of small scales ; rostral erect ; nose rounded. A. 

 LoK/iii, the Large-Cheeked Anolis ; South America and West ludies. 

 A. occifilalii, the Occipital Anoli* ; West Indies. A. linealiu, the Lined 

 Anolis ; Martinique. A. Oeyedii, the Alligator Anolis ; West Indies. 

 A. narmoratiu, the Marbled Anolis ; Martinique. A. porcaltu, the 

 Ridge-Nosed Anolis; Cuba. A. principalu, the Carolina Anolis; 

 North America. A. Jtavetixnt, the Yellowish A nolia ; North America. 

 A. Kichanlii, Richard's Anolis. A. ptHKlattu, the Dotted Anolis; 

 Brazil A. nebubnu, the Clouded AnolU ; Cuba and Texas. A. 

 lineatopat, the Lineated Anolis. A. maculatiu, the Spotted Anolis; 

 West Indies. A.fuU-kMut, the Beautiful Auolis; Martinique. A. 

 rermiculatta, the VtrmiciUated Anolis; Cuba. A. itenodactylwi, the 

 Slender-Toed Anolii; Jamaica. A, rcticulatut, the Netted Anolu ; 

 Tropical America. A. /tuco-auro/tu, the Chilian Auolis; Chili. A. 

 crneui, the Bronzed Anolis; Tropical America. A. luciiu, the Pike- 

 Headed Anolis; Cube, A. (joudotii, Ooudot's Anolis; Martinique. 

 A. pvndatut. the Green Anolia ; Brazil. A. bullarit, the Ked-Tbroated 

 Anolis; Martinique. A. Vatencicxii, Valencienne's Auolis. 



27. Atanthulu. Toes dilated ; back aimple, with scattered tubercles. 

 A. Loytiana, the Aoantholis; Cuba. 



28. />roconnro. Toes scarcely dilated; back simple; tail round. 

 D. n if rat, the Shining Draoonure; Surinam. D. chrytolepii, the 

 Golden Draconure ; West Indies. 



29. A'orojx. Toes slender, not dilated; back aimple; tail round. 

 A', auratut, the Golden Norope; Surinam. 



1L Body subtrigonol or depressed. Terrestrial. 



D. Body Rubtrigonal, covered with large generally keeled scales, 

 directed obliquely towards the back ; head generally 

 shielded, superciliary and interparietal shields distinct; 

 throat smooth, or with a cross fold behind ; toes simple, 



o. Caudal and dorsal scales similar. 

 * Femoral porea distinct ; interparietal plate large, 

 80. Tropidolepu. Back not crested ; throat with a fold on each 

 side; nostril superior, subapicai T. undulatut, the Wared Tropi- 

 dolepis; North America. T. torquattu, the Collared Tropidolepis ; 

 Mexico. T. formonu, Mergmaim's Tropidolepis ; Mexico. T.tpinonu, 

 the Spiaose Tropidolepis. T. horridu, the Horrid Tropid '. 

 Mexico. T. grammicui, the Spotted Tropidolepis ; Mexico. T. micro- 

 lepidutut, the Small-Scaled Tropidolepis ; Mexico. T. variabiiii, the 

 Variable Sceloporus; Mexico. T. our cut, the Bronzed Sceloporus; 

 Mexico. T. icalarit, the Spotted Sceloporus; Mexico. 



* Femoral pores none; anal pores distinct, marginal; back 

 and tail not crested ; interparietal plate small 



31. Lciodera. Nostril lateral on the face-ridge ; scales of the sides 

 of the neck and back largo ; rhombic sides simple. L. Ckilcntit, the 

 Chilian Lciodera; North Chili. L. (irarenhoritii, Gravenhorst's 

 Lciodera; Chili. L. yratilit, the Slender Leiodera; Valparaiso and 

 Patagonia. 



32. LeioUrmui. Nostril lateral on the face-ridge; scales of the 

 sides of neck granular, of back rhombic, sides simple. L. c</ano- 

 natter, the Blue-Bellied Lviohcmus ; Valdivia, L. Bellii, Bell's 

 Lciolecmus; Chill L. Biuronii, Bibron's Leiohcmus; Chili. L. 

 linratiu, the Lineated Leiolicmus; Chili. L. nigromnculattu, tho 

 Black-Spotted Leiolnmus ; Chili and Coquimbo. /,. incontpicuu*, the 

 Inconspicuous Leiolicmus ; Chill L. picttu, the PaiuU-d Leiolaimiu ; 

 Chili aud Valparaiso. L. tcnuii, the Dotted LeioUcmus; Valparaiso 



North Patagonia. L. A'ingii, Captain King's Leiolsemus; Patagonia. 

 L. \\'ti'jman,i, Wcigmann's Lciolamus; Bahia Blanca, Peru, Monte- 

 Video, and Maldonado. 



83. Ptydogcnu. Nostril lateral on tho face-ridge; scales of the 

 neck granular, of back rhombic; sides with a crest of keeled scales. 

 F. pcclinattH, tho Ptygodore. 



34. yrocfofrdwt. Nostril above the face-ridge; scales of the neck 

 granular, of back rhombic ; small sides simple. P. multimaculaltu, 

 the Pructotrete ; Bahia Blauca, and Patagonia. 



*** Femoral and anal pores none, 

 t InterparieUl plate linear, small ; head shields rather regular. 



88. Ltioetphalut. Back and tail crested; scales of throat, back, 

 and tail, rhombic, moderate. L. Uerminieri, Hermimer's Roquet; 



L. ornaltu, the Shoulder-Spotted Roquet ; Tropical America. 



80. Stcnocerut. Back and tail lowly crested; scales of back 

 rhombic, of the tail Urge, spinose, S. roiciventru, the Stcnocere ; 

 Boliria. 



37. Trackgfj/etiu. Back and toil not crested; scales of back rhombic, 



