5^0 C98 pt'Z A SYNOPSIS OF THE SPECIES OF THE CLASS REPTILIA J. E. Gray I UNIVERSITY MICROFILMS, INC. • Ann Arbor, Mich. BIOLOGY ''■^r'WfM^*,.:.^^*- Return this book on or before the Latest Date stamped below. Theft mutilation, and underlining «*»»<"'';* orlreosLs for disciplinary oction and may result in dismissal from the University. University of Illinois Library SEP 7 1966 AU6 1 0 967 AUG 2 i 1^? L161— O-1096 Digitized by the Internet Archive in 2011 with funding from University of Illinois Urbana-Champaign http://www.archive.org/details/animalkingdomaOOcuvi -.*-.- m>: THE ANIMAL KINGDOM ARRANGED IN CONFORMITY WITH ITS « ORGANIZATION, BY THE BARON CUVIER, MEMBER OF THE INSTITUTE OF FRANCE, ate. &c &c. WITH ADDITIONAL DESCRIPTIONS OF ALL THE SPECIES HITHERTO NAMED, AND OF MANY NOT BEFORE NOTICED, BT EDWARD GRIFFITH, F.L.S., A.S., CORRESFONOXKO MEMBER OF THE ACADEMY OF NATURAL SCIEKCES OF PHILADELPHIA, &C AND OTHERS. VOLUME THE NINTH. LONDON : PRINTED FOR WHITTAKER, TREACHER, AND CO. AVE-MARIA-LANE. MDCCOXXXl. A pf. Bib I !> P V LIST OF PLATES IN TIIE NINTH VOLU3iE. C. f £ . To face Fagc ^ Head of Oenus Coecilia, &c. 2ll4 Dunrille's Pseudopus 807 /Punctated Amphisbcena 326 j Vertebra of Boa-Constrictor, &c 326 \ The Jiboya 330 Peron's Python : 331 The Common Snake, &c 334 Wanna Pam Snake 336 Brazilian Varied Snake ; ib. Striped-headed Coluber ib. Ornamented Snake ib. '. Banded Bungarum 385 1 Spiral Hydrus 386 ! White Faced Homed Frog, and Agua Toad 395 ■ Green Frog 442 I Variable or Green Toad 400 !pipa.... 464 : Gigantic Salamander .-»i 475 ; Harlan's Menobranchus ib. iAxoltl ib. JERRATA IN THE PLATES. Chreen Lizard, &c. For Lachydromusy read Tachydromus, bis. To the Chuckeerabora, add " La Vipere elegante, Daud. Russ. vij." ERRATA. Page L'.ite 68 9 and 20 for teutoria read tentoria 96 3 .. Tierce Fierce, and for ferx read ferox 204 25 . bicarivata bicarinata 223 32 Alolychrus Polyclirus 255 19 . . _ arms ' . . anus 267 17 Bathrops Bothrops A SYNOPSIS OF THE SPECIES OF THE CLASS REPflLIA. By J. E. Gray, Esa. F.G.S., &c, &c. iST.-S. — In the following List those species alone are included, . which have either been seen* by the author, or which have been welljigured or described. REPTILES. Vertebrated animals, respiring by lungs, having warm red blood, heart with one ventricle anu two auricles and the skin covered with scales. • la formjng this list, the collection of reptiles of the British Museum, the College of Surgeons, and of Mr. Bell, in London, of the Gardens of Plants and Ecole de Medicine at Paris, of the Royal Museum of Leyden and Berlin, and the Free Town of Francfort, have been studied with at- tention through the kindness of their several keepers. — J. £. Gray. Oct. 183a B _ 1 CLASS REPTILIA. Section I. Cataphracta. Body covered with two shields. The vent longitudinal or circular : the ossa quadrata, and the pterygoid processes forming part of the skull ; the organs of generation simple and single in both sexes. Order I. Testudinata, or Tortoises. Ribs, vertebrae and sternum united together in a bony case, enclosing the body , and protecting the head and limbs ; the jaws toothless. The case is usually covered with horny shields, which are granular in the newly -hatched animal, and which increase in size by the addition of layers on the under side of the edge, and having the first formed granular part marked on their surface ; this part is called the areola. The shields of the upper shell are called, from their position, discal, consisting of the vertebrae or central series, and costal, composed of the two lateral series and marginal plates, which have often an ad- ditional small narrow plate placed on the back of the neck, called the nuchal plate. The under shell is usually covered with six pair of shields, one called the gular (which have sometimes an additional intergular plate between them), the second the humeral, the third the pectoral, the fourth the abdominal, the fifth the femoral, and the sixth the anal plates ; the suture between the upper and lower shell is generally covered by the end of the pectoral and abdominal plates, and there is a small plate placed at each end of it, the front called the axillary, and the hinder the inguinal plate. Genus I. Testudo. Feet club-shaped, claws five before, four behind blunt ; jaws homy. Shells hemispherical, solid, covered with horny plates ; the hinder marginal plate broad, incurved. 2 ORDER OPHfDIA, I. Shell mid sternum immoveahley sternal plates in the gular pair being separate. Testudo. Indian Tortoise. Test. Indica, Lin. Test. Retusa, Merrem. Test. Elephantopus, Harlan. Test. Nigra, and Test. Calif ornicr^ Gaimard. Test. Gigantea, Schw. and Test. Dussumieriy Schegel. Shaw, t. 3. Frey. Voy. t. Shell black, nuchal plate, often deficient; pectoral plates short. India, naturalized in California, Isle of France and Galapago Isles. Length three Jeet. Hercules Tortoise. Testudo Hercules^ Spix. Braz. t. 14. Test. Carbonaria, Spix. t. 16. Shell subquadrate, depressed, contracted in the sides, black, areola yellow, rarely exceeds three quarters of an inch in width. Nuchal plate none. Sternum behind roundly lobed, leg red spotted, length twenty -four inches. South America, Var. Truncata. Shield and bones beneath elevated, coni- cal, truncated. Tabular Tortoise^ Shaw. Test. Tabulata, Walb. Schoepf. t. 12. f. 2. t. 13. T. Sculpta, Spix. t. 15. T. CagadOy Spix. t. 17. Young, T. denticulata, Lin. Shell oblong, depressed, deeply grooved ; black brown areola large ; the sternum behind rather acutely lobed. Brazils. ' - .' , Schweiger Tortoise. Test. Schweiger^, n. Shell oblong, depressed, pale brown, obscurely brown dotted ; beneath brown rayed; areola small central; sternum before acutely cut. Hab. ' ? Gopher Tortoise. Test. Polyphemus, Bartram. T. depressa, Lesueur, Mss. Guerin. Icon. 1. 1. f. i. T. Carolina, Leconte Mu3. Paris. Shell oblong, depressed pale brown grooved ; nuchal plate B 2 3 CLASS REPTILIA. broad, square ; frontj^of sternum projecting ; tail obsolete. North America. Bell-shaped Tortoise. Test, Marginata. Schoepf. t. 11, 12, f. 1. T. Graji. Herm. T. Gracce, Lacep. T. Campanu- lata, Walb. Shell oblong, ventricose ; hinder margin flattened, expanded toothed ; shields grooved ; blackish yellow varied ; areola yellow, contracted ; nuchal plate, very slender, long. Egypt? , . Radiated Tortoise, Shaw. Test Radiata, Shaw. Zool. t. 2. J. Coui, Daud. T. Calcarata^ Merrem. Shell hemispherical ; black, yellow rayed, areola sunk ; nu- chal plate none. Madagascar. Siilcated Tortoise. Test. Sulcata, Shaw, Miller, Cym. Phys. t. Test. Calcaratay Merr. \Test. radiatal Var, Gray, Syn. Rept. Shell sub-globular, yellow ; shield rather convex, deeply grooved ; areola small, superior ; nuchal plate none. Sene- gal. Dongola. Dr. Ruppell. Leopard Tortoise. Test. Pardalis, Bell. Zool. Jour. t. J 5. T. armata, Boie Mss. Test. Bipunctata, Cuv. R.A. Shell hemispherical ; yellowish, black spotted ; nuchal plate none. Cape of Good Hope. ■ : Starred Tortoise. Test, Stellata, Test. Actinodes, Bell. Z. Jour. t. 23. Test. Elegans, Shaw, t. 6. f. 1. and Schoepf. t. 26. T. Stellata,' Schw. Shell globular ; shields convex, grooved ; black, yellow- rayed ; areola yellow, large ; nuchal plate none. India. Ceylon. 4 ■ . ~ • . ORDER OPHIDIA. Geometricai Tortoise, Shaw. Test. Geometrica, Lin. — Shaw. t. 1. f. 1. Jun. T. Luteolay Daud. Shell globular oblong, black ; shields yellow-rayed ; nuchal plate long; i9 nuchal plate short. Test. Tentoria, Bell. Z. Jour. t. 26. Cape of Good Hope, Madagascar. Greek Tortoise. Test. GrcBca, Lin. T. Carolina, Herm. T. Geometrica, Brunn. Test. Hermnnni, Schn. Edw. t. 204. Shaw. t. 1. Shell oblong, globose; black, yellow-rayed; nuchal plate, slender ; caudal plate incurved. Var. /3 hinder margin ex- panded, Schoepf. t. 9. Inhab. South of Europe, Var. no nuchal plate. Test. Zolhafa,Yorsk. Areolated Tortoise, Test. Areolata, Thumb. Schoepf. t. 23. Shell oblong, rather depressed ; shields yellowish, deeply grooved ; areola brown ; sutures deep ; nuchal plate, nar- row. Var. /5 greenish ; hinder lobe of sternum mobile. Cape of Good Hope, variable in number of dorsal and marginal plates. Marked Tortoise. Test. Signata, Walb. SchoefF. t. 28. T, Cafra ? and T. Juvencella ? Daud. Shell rather depressed ; dorsal shields flattish ; yellowish, black-rayed; areola blackish; nuchal shields narrow. Africa? .... II. Dorsal shell and sternum both solid ; sternal plates eleven, the gular pair produced united into one. Chersina. Gray. Angular Tortoise, T. {Chersina) Angulata^ Dumeril. Test. Bella, Gray Spec. Zool. t. 3, f. 1. Test. Pusilla, Lin. T. miniata, Lacep. Shell oblong, ventricose ; black, shields grooved ; areola yellow ; nuchal plate very narrow. Cape of Good Hope. 5 CLASS REPTILIA. III. Hinder part of dorsal shell mobiles united to the ante- rior by a carious ligamentous suture; sternum solid, shields twelve. Kinyxis. Bell. Homer's Tortoise. Test. {Kinyoeis) Homeana. Bell. Lin. Trans, xiv. t. f. 2. Shell brown ; hinder edge reflexed ; vipper edge of fifth ver- tebral plates prominent ; nuchal shield long, narrow ; front of sternum expanded. Demerara. Guadaloupe. Bells Tortoise. Test. {Kinyxis) Bellianay Gray. Shell brown, edge hardly expanded ; centre of hinder verte- bral plates convex ; nuchal shield long, narrow ; front of sternum, narrow. Inhab. ? — Mus. Gray. Worn Tortoise. Test. (Kinyxis) Erosa. Shell brown ; hinder edge reflexed, denticulated ; centre of fifth vertebral plates prominent ; nuchal shield none. Young, back rounded. K. Castanea. Bell. 1. c. t. f. 1. Test. Denticulata, Shaw. Zool. t. 13. Test. Erosa, Schw. Inhab. IV. Dorsal shell solid; front lobe of sternum mobile. Pyxis. Bell. Radiated Box Tortoise. Test. (Pyxis) Aranoides, Bell. Lin. Trans, xv. t. 1 6. Shell hemispherical, varied black and yellow; length 6, breadth 4 inches. Inhab. Genus II. Emys. Feet palmated ; claws five— four, sharp ; nostrils pervious; jaws homy ; shell polid, covered with horny plates, marginal plates twenty-three or twenty-five, hinder pair free ; sternal shields eleven or twelve ; neck retractile ; pelvis only attached to the vertebra. 6 ORDER OPHIDIA. I. Shell hemispherical ; sternum rounded before, divided by i a transverse suture ; both lobes mobile, and united, to the hack shell by a cartilaginous suture ; sternal plates twelue. Cistuda, Gray. American Box Terrapin, E. {Cistuda) Carolines, Test. Carolince, Lin. Test. Brecicaudata, Lacep. Test. Clausa, and T. Irregulata, Daud. Terrapene Carolince, Ter, Nebulosa, and Ter. Guttata, Bell. Edw. t. 205. Shell hemispherical, brown yellow varied, convex, lowly keeled ; marginal plates twenty-six or twenty-seven. North America ; Var. /9. fusca, brown, rot spotted. Eastern Box Terrapin. K. {Cistuda) Amhoinensis, lUust. Ind. Zool, t. f. 1. Emys Couro, Schw. Terrapene Bico- lor. Bell. Zool. Jour. ij. t. 14. Test- Amboinensis, Daud. Shell hemispherical, slightly tri-keeled, blackish, margin expanded, broad ; nuchal plate linear ; sternum yellow and black varied ; head with two yellow lines on each side. Java and Penang, Var. Leveriana. Shell oblong, with back flat- tened, not keeled, i :• v» Three-banded Box Terrapin. E. {Cistuda) Trifasciata, Gray. Sternothcerus Trifasciatus, Bell. Zool. Jour. iij. t. 13. . ' Shell oval, keeled, dull yellow, varied with black and red- dish, with three dorsal streaks ; sternum behind nicked ; head yellow, with two brown bands on each side. Inhab. — European Box Terrapin. E. {Cistuda) Europea. Testudo Europea, Schn. Test. Flava, Lacep. T. Punctata, Gotw. T. Orbicularis, Linn. ? T. Lutaria, Merrem. T. Meleagris, Shaw, Zool. t. 5. Jun. T. Pulchella, Schoeff*. t. 26. Shell depressed, oval, yellow spotted ; sternum behind nicked 7 CLASS REPTILIA. before rounded ; body and head black and yellow spotted ; tail long. South of Europe. These are the only Water Tor- toises known which have concave sternums. II. Sternum united to the hack shell hy a horny sutui e ; ■ solidy before and hehijid lobed ; sternal plates twelve. £mys. A. Margin of shell acutely toothed ; sides of sternum rounded* Found in the Old World. Spinous Terrapin. Emys Spinosa, Gray^ Illust. Ind. Zocl t. Shell suborbicular, pale brov»'n ; edge shai-ply toothed ; areola with a central spine. Penang. . . _ . Dhor Terrapin. Emys Dhor, Gray, Illust. Ind. Zool. t. Shell suborbicular, hinder edged, acutely toothed; areola punctate ; brown, black spotted: India. Spengler Terrapin. Emys Spengleri. Test. Spengleriy Walb. t. 3. Test. Serrata, Shaw, t. 9. T. Tricarinata, Bory, Atlas, t. Shell oblong, pale brown ; tri-keeled ; hinder margin deeply toothed. Africa. Thick-necked Terrapin. Emys Crassicollis, Bell, Gray, Illust. Ind. Zooi. t. Shell ovate, black, tri-keeled; hinder edge toothed. Su- matra. Thuryi Terrapin. Emys Thuryi, Gray, Illust. Ind. Zool. t. Shell oblong, black, slightly tri-keeled ; hinder edge slightly toothed; head blackish, eyebrow and chin yellow lined* Bengal. 8 ORDER OPHIDIA. Hamilton's Terrapin. Emys Hamiltonii, Gray, Illust. - Ind. Zool. t. Shell oblong, black, yellow-rayed ; hinder edge toothed ; head, and body, and limbs yellow spotted. India. Eyehearing Terrapin. Emys Occilifera^ Kubl. Beytr. Shell hemispherical ; behind toothed ; above with blackish eyed rings, beneath yellow ; a doubtful species. B. Shell margin entire; sternum with the sides keeled. Living in the Old World. Tented Terrapin. Emys Tecta^ Bell, Gray, Illust. Ind. Zool. t. Shell ovate, oblong, solid ; olive, beneath varied brown and red ; animal red and yellow lined. Lined Terrapin. Emys Lineatd^ Gray, Illust. Ind. Zool. t. Shell oblong, olive ; head blueish ash ; chin and cheeks yel- low varied ; nape and eyebrow scarlet lined. India. Batagur Terrapin. Emys Batagur, Gray, Illust. Ind. Zool. Shell suborbicular, depressed, pale olive; margin dilated; body ash ; chin and lips yellowish. Var. jS Test. Baska. Shell oblong, ovate. Common Terrapin^ or Mud Tortoise. Emys vulgaris. Test. Lutaria, Lin. ? Shell ovate, olive, black dotted, clouded and ringed with • blackish and orange, head and limbs orange lined. Adult smooth, young rugose. South of Europe. Spain. Caspian Terrapin. Emys Caspia, Ruppell. Test. Caspia, Gmel. Trav. t. bad. Shell oblong, slightly contracted on the sides, olive yellow netted ; beneath black, irregular yellow spotted, head olive bro\/n, with narrow sub-concentric yellow lines. Caspian Sea. Dr. Ruppell. 9 ORDER OPHIDIA. C Shell margiii suh-entire ; stemttm sides rounded. Living in the New World. Rough Terrapin. Emys Scabra, Lacep. t. 8. f. 2. Emys Darsata^ Schoepft. Shell ovate oblong, acutely keeled ; head with a fork band over each eye. South America. Dotted Terrapin. Emys Punctularia, Schweiger, (not figured.) Shell oblong, convex, brown ; shield blackish edged ; head with red lines and spots. South America. Marbled Terrapin. Emys Marraorea^ Spix, t. 10. Shell oval, greenish, varied with black and yellow ; shields yellow edged ; head with yellow lines. ^Brazils. Muhlenberg''s Terrapin. Emys Muhlenbergii, Schw. Emys Bipunctata, Say. SchoefF, t. 31. Shell oval, low, side contracted ; shields grooved, varied with yellow ; head blackish, with two yellow spots. North America. Spotted Terrapin. E?nys Guttata, Schw* Test. Punctata. . ' Bosc. SchoeflP, t. 5. Shell low, oval, smooth, black, yellow dotted ; head yellow spotted. North America. Painted Terrapin. Emys Picta, Schw. SchoefF, t. 4. Shell oblong, flattish, smooth, olive ; shields pale edged ; head and neck yellow lined. Young. Cinereous Tortoise, Brown, lUust. 48. North America. Specious Terrapin. Ewys Speciosa, Gray, Syn. Rept. Shell oval, flattish, keeled ; shields grooved, black, yellow spotted ; beneath yellow with black areola. North America ^ 10 €LASS REPTILIA. Concentric Terrapin. Emys Coficentrica, Schw. SchoefF. t.45. Test, Palustris, Gmel. T. Centrata, Bosc. Shell oval, side edges recurved ; shield, brown ringed ; head and limbs ash, black speckled. North America. Var. polita shell, black polished. . ;. Reticulated Terrapin. Emys Reticulata, Gray. Test. Reticulata, Latr. Daud. t. 22, f. 3. Shell oblong, olive, pale netted ; beneath yellow, with four round black spots on side of the margin, and one at each end of the sternocostal suture. North America. Banded Terrapin. Emys Vittata, Gray, Syn. Rept. Shell oblong, olive; behind doubly toothed, varied with unequal yellow lines ; beneath yellowish, with squarish eyed spots on the sutures of the marginal plates, and roundish ones on the end of the symphysis ; head and feet yellow lined. North America ? Furrowed Terrapin. Emys Decussata, Gray. Shell oblong, pale browri, shields rugulose ; beneath yel- lowish, with subocellated spots, on the sutures of the margi- nal plates ; animal greenish. North America. Lettered Terrapin. Emys Scripta, Gray. Test. Serrata, Daud. t. 21. f. 1. Schoeff. t. 3. f. 5. Jun. Shell oblong, longitudinally rugose, brown, sides yellow banded ; beneath yellow, with a series of roundish spots on the middle of each marginal plate, or two on the gular plates, and four on each sternocostal symphysis. North America. Serrated Terrapin. Emys Serrata, Gray. Shell oblong, longitudinally rugulose, irregularly cross- banded ; beneath yellowish, with a serieii of subocellated spots on the sutures of the marginal plates, and dark-edged pale lines on the symphysis. North America. 11 CLASS REPTILIA. Ornamented Terrapin, Emys Ornata, Gray. Shell oblong, longitudinally rugose olive ; vertebral shields, irregularly ringed ; beneath, pale yellow, with an irregular black band down the centre, and on each side, and squarish- eyed spots on the suture of the marginal shields. South America. Young, beautifully orange and green-ringed. Rugose Terrapin. Emys Rugosa. Test. Rttgosa, Shaw, Zool. t. Shell oblong, rugulose ; black, with yellow lines and dots ; beneath yellow with black dots and lines ; Var. ^ shell livid, black dotted. North America. Lake Erie Terrapin. Emys Lesueurii, Gray, Syn. Rept. Shell oval, smooth, tuberculately keeled ; behind, toothed ; olive, with anastamosing black-edged pale lines ; beneath, yellow, shields, black edged, margin, black ringed ; head, yellow lined. $ Emys Geographicay Lesueur, Jour. Acad. N. Philad. t. North America. BelVs Terrapin. Emys Belliii Gray, Syn. Rept. Shell oblong; dorsal line, depressed; olive, netted with green and black dots ; beneath blackish, yellow dotted, sur- rounded by an irregular yellow margin. White Spotted Terrapin. Emys Kinosternoides, Gray, Syn. Rept. Shell oblong, pale brown, with black-edged white keel, and side-spots, and with a dentated white edge ; beneath yellow spotted ; sternum rounded at both ends. ( ?) Ring-bearing Terrapin. Emys Annulifera, Gray, Syn. Rept. Shell oblong, depressed ; pale brown, yellow lined with 12 ORDER OPHIDIA. yellow ring placed across the sutures of the vertebral plates ; beneath pale brown, varied with darker brown. ( ^ ?) III. Sternum united to the hack shell by a horny suture ; before rounded, behind rounded, or slightly nicked, divided by one or two cross sutures ; sternal plates^ eleven gular pair united. Kinosternon. Spice. Three-keeled Kinosternon. E. {Kinosternoii) Scorpoides. Test. Scorpoides, Lacep. Test. Tricarinata, Daud. Ki- nosternon Shavianum, Bell. Kin. Longicaudatum, Spix, t. 12 ? Shaw Zool. t. 15. Jun. Test. Retzii, Daud. Shaw, t. 11. Shell oblong, olive polished, rather compressed three- keeled, keels continued, dorsal shields long, hexangular, sub- imbricate ; sternum as broad as the opening of the shell. South America. Three Ridged Kinosterncn. E. (Kinosternon) Triporcata, Gray. Terrapena Triporcata, Wiegmann, Mus. Berl. j Shell, oblong, olive, with three very high compressed ridges ; sternum cross shaped, very narrow ; the largest species of the genus. Pennsylvanian Kinosternon. E. (Kinosternon) Penn- sylvanica. Test, Pennsylvanica, Bosc. Test. Subrufa, Lacep. Edw. t. 287* Var. Test. Glutinata, Daud. Test. Boscii, Merrem. Shell oval, brown ; dorsal shields, flattened ; sternum, rather narrower than the opening of the back shell ; behind nicked. North America. Musky Kinosternoni E.. {Kinosternon) Odoratum. Test. Odorata, Bosc. Cistuda Odorata, Say. Sternotheros Odoratue, Bell. Shell ovate, keeled ; sides declivate ; sterniun very narrow ; 13 CLASS REPTILIA. before acute, behind acutely nicked ; head brown, yellow lined on each side. North America. IV. Sternum very narrow^ cross-shaped, rounded at both ends, united to the bacJc shell by very long bony processes. Sternal plates Jive pair, and a pair over the symphysis. Chelydrs Schw. ... • Serrated Alligator Tortoise. Emys (Chelydra) Serpen- ■ Una. Test. Serrata, Penn. Chelydra Lacertina, Schw. Young. , Test. Serpentina. Lin. Shaw, t. 29- Shell oblong ; "rertebral shields flat ; upper edge of costal plates, prominent ; behind bluntly six toothed. Young sharply three-keeled and toothed. North America. III.— Chelys, Gray. Feet palmated ; claws five — four, sharp ; nostrils sub-tubu- lar ; shell solid, covered with horny plates ; hinder pair of marginal plates separate ; sternal plates thirteen, with an intergular one ; neck contractile on the side ; pelvis attached to the sternum and vertebrae. I. Lips horny ; sternum front, and. sometimes hinder lobes mobile ; intergular plate manjinal. Sternotherus, Bell (part.) Gray.* Chestnut Chelys. Ch. (Sternotherus) Castaneus, Gray. Emys Castaneus, Schw. Festudo Subjiiger, ^ Daud. , Ster7wtheru8 Castaneus, Bell. Zool. Jour. t. 14. Shell oval, sharply keeled, convex, chestnut ; shields radiately rugose ; areola black. Var. /S hinder lobe, mobile. ♦ I have used as the name of the sub-genera those which have been given by authors to what they considered genera in this family; but I have generally restricted their signification, so as to render them more definite. '14 ORDER OPHIDIA. Teat. Suhnigeu Lacep. 2. O. t. 7- f* r. Test. Nigricafis, Merrem. . 11^ Jaws horny ; sternum solid ; intergular plates six sided hetween the gular and pectoral plates. Chelodina. Long-necked Chelys. Ch. {Chelodina) Longicollis, Gray. • Testudo Longicollis, Shaw. New Holland, t. 7* Shell oblong flat ; sternum yellow, shields brown edged. III. Jaws horny ; sternum solid, intergular plate small, marginal ; nostrils short, tubular. Hydraspis. Bell. Species of the Old TVorld or its Islands. Cape Chelys, Ch^ (Hydraspis) Subru/a. n. Test. Sub- rufa, Lacep. Q. 0. 1. 12. Test. Lndica, Daud. — Jun. Test. Galeata, $choeff. t. 3. f. 1. Test. Scabra, Retz. T: Senegalensis, Daud. ; and Emys Olivacea, Schw. Shell oblong, low, pale brown, smooth ; nuchal plate, none ; vertebral plate depressed. Cape of Good Hope. Senegal. Adamsoh's Chelys. Ch. (Hydraspis) Adamsonii, Emys Adamsonii. Schw. Shell low, oval, very broad behind, yellow, black spotted ; nuchal plate none ; vertebral plates keeled, first um-shaped, hinder triangular. Africa. Nigritia. Macquary'^s Chelys. Ch. (Hydraspis) Macquarii. Emys Macqvarii. Cuv. R. A. Shell oval, depressed, contracted in front, behind subden- tate, dark olive ; shields rugulose ; dorsal line sunk ; nuchal plate narrow. New Holland. 15 CLASS REPTILIA. Species of America. Flat Headed Chelys. Ch. (Hydrastis) Planiceps. Test. PUnicevs. or T. Platycephala. Sclin. Berb. Naturf. t. 16. T.Martinella, Cuv. R. A. Emys Discolor, Thumb. E.Caniculata? Spix, t. 8. E. Carunmlata, Cuy.B.. A. Emys Geoffroyana, Schw. SheU oblong, flattened, black brown, centre concave ; nu- chal plate narrow; sternum yellow edged. E. Jspera, Cuv. R.A. is a variety with larger warts in the neck. Depressed Chelys. Ch. (Hydraspis) Depressa, Gray. Test Depressus. Pr. Max. t. not Spix. Shell eUiptical, pale brown, black rayed ; nuchal plates narrow ; head and neck black spotted. Brazils. Radiated Chelys. Ch. (Hydraspis) Radi^lata, Gray. Emys. Radiolata, Mikan. Pr. Max. T. Depressa, Spix, t. 3. i. 12. Shell oval, slightly narrowed before, yellowish, black rayed ; nuchal plate distinct ; neck beneath yellow, eyelids streaked. Brazils. Red Footed Chelys. Ch. (Hydraspis) Rufipes, Gray, Spix, t. 6, Jun. Emys Stenops, Spix, t. 9, f- 3, 4. Shell elliptical, keeled in front, brown, beneath yellowish; nuchal shield linear ; head and neck thick, oHve brown, beneath yellowish. South America. Green Chelys. Ch. (Hydraspis) nridis. Gray. Emys Viri- dis, Spix, t. 2, f. 4. ; t. 3,f.l. Shell elliptical, olive green, brown dotted; nuchal shield linear ; intergular shield large, cordate. Brazils. J6 CLASS REPTILIA. Expanded Chelys. Ch. {Hydrapsis) Expansa, Gray. Emys ExpansQy Schw. E. Amazonica^ Spix, t. 1. E. Tracaxa. [ Spix, t. 5, f. 1. 2. Shell ovate, depressed, brown, black spotted ; mprgin very much expanded ; nuchal shield none ; nose longitudinally grooved, Var. /S Emys Erythrocephala, Spix, t. 7, is perhaps the same. It is from a stuffed specimen. Brazils. DumeriCs Chelys. Ch. (Hydraspis) Dumerilliana, Gray. Emys Icterocephala, Spix, t. 4. Shell ovate, black, discal shields flat, hinder margin expanded ; bead globose ; nose convex, smooth. Brazils. Cayenne Chelys. Ch. (^Hydraspis) Cayennensis, Gray, Emys Cayennefisis, Schw. Shell ovate, convex, tuberculately keeled ; smooth, yellow green, black varied ; nuchal shield none ; head brown, with two yellow spots. $ Emys Gibba, Schw. Shell black. Guiana. Demerara Chelys. Ch. (Hydraspis) Lata, Bell MSS. Shell suborbicular, depressed, black ; head and neck black orange spotted. Demerara. Bell. Consult also, 1, EmysBitentaculata, Cuv. MSS. — 2, Emys Barbatula, Gravenhorst, Delic. t. 5. f. 3. 4.-3. Emys Con- striata, Cuv. MSS. — 4. E. Maximiliana, Michan, and — 5, Hydraspis Pachyura, Boie MSS. IV. The beak very broad, depressed, covered with soft lips ; the nostrils long, tubular ; intergular plate marginal ; Chelys, Dumeril. Brazilian Matamata. Chelys Matamata, Test. Matamata, Brong. Jour. H. N. 7> t. 13. Ch. Fimbriata, Schn. Shell oblong ; shields elevated acute, forming three keels. South America. c 17 CLASS REPTILIA. IV.—Teionyx. GeofF. Feet palmated, claws three, sharp ; the shell covered with a soft skin expanded on the edge into a flexible margin. Living in fresh water in tropical climates. I. The margin of the shields cartilaginous and the ster- num narrow. Trionyx, Gray. Fierce Trioriyx. Trionyx Ferox, Merrem. Pen. Phil. Trans. Ixi. t. 10. Trionyx Georgicus, Geoff^. Shell rather convex, obscurely keeled ; front and hinder mar- gin wanting; sternum callosities four, two hinder, large, united into one. Trionyx Spiniferus, Lesueur, Mem. Mus. xi. appears to be the young, as may also be Test. Brong- niartii, Sch. and T. Carinatus, GeofFroy. Armless Trionyx. Trionyx Muticus, Lesueur, Mem. Mus. XV. t. Shell elliptical, confounded with the neck, and armless in the front ; sternal callosities four, two hinde.: large, united toge- ther. North America. Egyptian Trionyx. Trionyx j^gtjptiacus, GeofF. Rept. Egypt, t. 1. Test. Triunguis, Forsk. Green, white spotted ; shell convex, slightly keeled ; sternum callosities four, the hinder ones triangular, separate. Egypt. Indian Trionyx. TrUmyx Indicus, Gray, Illust. Ind. Zool. t. Olive green, with black-edged irregular pale tortuous and forked streaks; sternal callosities four, the hinder ones rounded triangular. India. Hurum Trionyx. Trionyx Hvrum, Gray, Illust. Ind. Zool. Trionyx Gangeticus, Cuv. Oss. Fos. Dull brown ; head green, with two yellow spots on each side 18 CLASS REPTILIA. over the eyes ; sternum with four callosities, the ^ lateral truncate on the inner hinder angles, and the hinder ovate- triangular. India. Javan Tr'wnyx, Trionyoc Javanicun, Geoff. Ann. Mus. xiv. t. Illust. Ind. Zool. t. Dull green, with numerous narrow lines of minute white granular specks. Head green, with five or six diverging black lines, and a streak between the eyes. Sternal callosities two, linear, lateral. When young, back black ocellated. Java and India. Flat Trionyx, Trionyoo Subplanus, Geoff. Ann. Mus. xiv. Illust. Ind. ZooL t. Shield nearly flat ; front edge smooth ; sternum without any callosities. India. Euphratic Trionyx. Triony-v Euphraticus, Geoff. Test. Raschtf Oliv. Voy. t. 41. This needs a better description. Euphrates. Margin of the shield with a series af small hones in front and behind^ limbs covered, when withdrawn, by the valves on the side of the sternum. Emyda. Gray. Punctuated Trionyx. Tri. (Emyda) Punctatus, Lacep. Q. O. t. 7- f- 1- Schoepf. t. CO. A. B. Trionyx Coroman- delicus, Geoff. Gray, Illust. Ind. Zool. t. Peep green, occiput white spotted ; sternum with seven large callosities, the hinder of them united. India. N. B, — M. Cuvier informed me on his late visit to this country that there has been lately received at the Paris Museum a species of this genus, with 4 claws on each foot ; it will form a section {Tetraonyai), and it may be indicated by the name of Trionyx {Tetraonyx) Cuvieri. c 2 ' 19 CLASS REPTILIA. 6. Chelonia, Brongn. Feet fin-shaped, compressed ; shell with a bony margin all round, and a ring-like sternum. Living in the sea ; eating algce and mollusca. I. Shell covered with a leathery skin. Sphargis, Merrem. Coriaceous Turtle, Ch. {Sphaigis) Coriacea. Testudo Coriacea. Lin. Pen. Brit. Zool. 4. t. 1. Shell with three longitudinal dorsal ridges ; when young the skin granular, and fins very long. See Schoepft. t. 29. Me- diterranean Ocean. II. Shell covered with horny scales. Chelonia. A. shields depressed. Chelonia. Green Turtle. Chelonia Mydas. Testudo, Lin. Lacep. 2. O. t. 1. f. 1 Shell cordate, greenish brown, slightly keeled, shelving on both sides ; lower jaw deeply denticulated. Varies first in the number of the dorsal shields, and thus Test. Atra, Lin., and Test. Multiscutata, Kuhl. Second in the number of sternal shields, thus Test. Cepediana, Daud. Sometimes the shields are variously coloured, and thus Chelonia Virgata, Dumeril, and Chelonia Radiata, Ch. Maculosa and Ch. Lachrymata, Cuv., R. A. Testudo Japonica, Thumberg, appears to be only a variety with the shields so thin, that he mistook the sutures of the bones for the edge of the scales. Loggerhead Turtle, Chelonia Caretta, Testudo Carettaf Liri. Schoepf. 1. 16. Shell convex, vertebral shields gibbous ; head very large ; when young the nose produced, Testudo Nasicornis, Lacep. Edw. t. 206, Var. Vertebral shields sometimes seven. Chelonia Olivacea, Eschscholtz Atlas, t. 3. Mediterranean and other seas. 20 CLASS REPTILIA. ' B. Shields Imbricate. 4. Imbricated Turtle. Chehnia Imbricata., Schw. Testudo, Schoepf. t. 18, a. Shell elliptically keeled ; shields yellow, spotted and rayed. In the young, the ends of the shields are obliquely truncated, and scarcely imbricate, Caretta Nasicoriiis^ Merrem. Schoepf. t. 17> f« 1- Indian and Atlantic Ocean, Ord. 3. Emydosauri. Vertebrae of the back and the ribs free, mobile ; the mouth toothed ; the feet digitate, webbed ; above and beneath co- vered with imbeded squarish plates, with small scales on the sides. Gen. 1. Crocodilus. Toes 4, 5, claws 3, 3 ; tail compressed, above keeled, ser- rated ; teeth couical in a single series ; tongue fleshy. 1. The head depressed ; the canine teeth of the lower jaw received in a pit in the upper jaw. Alligator. * Feet digitate. South America. Spectacled Alligator. Croc. (Alligator ) Sclerops, Schw. Seba, 1, t. 104, f. 10, Spix. Braz. With a cross rib between the orbits ; nape with a band of shields. South America and Frazils. The frontal cross rib varies in shape. Eye-browed Alligator. Croc. {Alligator) Palpebrosus, Cuv. Eyelids bony ; nape with a band of shields, each bearing a crest. Var. the nuchal shields are sometimes irregular. Croc. Trigonatus, Sehsi,\,t. i08,{. 3. Guicna. + Feet, subpalmated. North America. Pike-muzzled Alligator. Cayman Croj. (Alligator) Lucius, Cuv. Croc. Cuvierii Leach Zool. Misc. t. Head depressed, parabolic, nuchal shields 4. North America. 21 CLASS REPTILIA. II. The head oblong ; canine teeth of the lower Jaw received in a notch in the edge of the upper ; feet palmated. Crocodilus. Common Crocodile. Crocodilus Vulgaris , Ann. Mus. x. t. 3. The head equal, broad ; nuchal plates six ; cervical six, sub- equal ; the dorsal shields quadrate, six rowed, Africa and India. RuppelVs Crocodile. Croc. Octophractus, Ruppell, MSS. The head equal, lon^- ; nuchal plates four, cervical eight, unequal ; the dorsal shields slightly keeled. Africa, Don- gola, and Senegal. Double-crested or Indian Crocodile. -Crocodilus Bipurcatus, Cuv. The forehead with two nearly parallel longitudinal ridges ; nuchal shields six ; dorsal sliields ovate, eight rowed. India and its islands. Rhombic Crocodile. Crocodilus Rhombifer^ Cuv. The forehead convex, with two diverging ridges; nuchal shields six ; dorsal scales quadrate, six rowed ; scales of the limbs thick, keeled. Siam. Crocodile. Crocodilus Galeatus, Cuv. Hist. Anim. Par. 6, a. Crown of the head with a two-toothed elevated crest ; nuchal shields six. India. Siam. Two-shielded Crocodile. Crocodilus Biscutatns, Cuv. Nuchal shields two ; the middle dorsal scales quadrate, the outer irregular, scattered. West Indian Crocodile. Crocodilus Acutus, Cuv. Geoff. Ann. Mus. Par. II. t. SJ. Head produced, convex at the base; middle dorsal scales 22 CLASS REPTILIA. quadrate, outer irregularly scattered; nuchal scales six. West Indies. , Armed Crocodile. Crocodilus Cataphractus, Cuv. Oss. Foss. f. Head produced ; nape with four bands of bony shields like the Alligators. Mus. Col. Surgs. Flat-headed Crocodile, Croc. Planirostris, Graves. Head, base, flat ; shields tubercular ; uuchal plates six, dis- tant. Africa ? " Intermediate Crocodile. Crocodilus Intermedius, Graves. Head produced, sub-cylindrical ; dorsal shields, six-rowed, nuchal, six. America .'* III. Head long, produced, muzzle cylindrical ; teeth and feet like Crocodiles. Gavialis. Common Gavial. Croc. (Gavialis) Gangeticus. The nuchal shield united to the dorsal plates ; the crown and orbits appear to dilate with age. See Faugas. Hist. Mont. St. Petri, t. 46, 48 ; from whence Croc. Tenuirostris, Cuv. Ganges. Order III. ? Enaliosauei. Conyheare. Vertebrae of the back and the ribs free, mobile ; the mouth toothed ; the feet fin-shaped. Only found in the fossil state ; perhaps not of this section. Gen. 1. IcHTHYSAURUs, Koenig. Head large ; teeth conical, placed in a groove ; neck short. For the anaton.y and species of this genus, consult Home Phil. Trans. Conybear. Geolog. Trans, and Cuv. Os. Fo&. vol 5. Ichthyosaurus Communis, Conybeare. Cuv. Os. Fos. t. 29. f.1,9. 23 CLASS REPTILIA. Ichthyosaurus Platyodon, Conybeare, teeth compressed. Cuv. Os. Fos. t. 2L;. f. 4, 5. Ichthyosaurus Tenuirostris_, Conybeare, Cuv. Os, Fos. 1 29. f. 8, 9. Ichhyosaurus Intermedius, Cuv. Os. Fos. t. 29- f- 2, 5. Ichthyosaurus Latifrons, Koenig. Icon. Sect. t. f. ined. Mus. Brit. ■ ■ ■ ' Ichthyosaurus Grandipes, Sharp. Geol. Trans. 1830. Gen. 2. Plesiosaurus, Conybeare. The head small ; neck very long, of many vertebrae ; the teeth placed in pits. For the anatomy of this genus, consult Conybeare, Geolog. Trans, and Cuv. Os. Fos. v. Plesiosarus Dolichodeirus, Conybeare, Geolog. Trans. Cuv. Os. Fos. v. t, 31 and 32. f. i, 2, &c. Lyme Regis. Plesiosaurus Recentior, Conybeare, Kimmeridge. Plesiosaurus Carinaius, Cuv. Os. Fos. v. 486. Plesiosaurus Auocois, Cuv. L. c. v. 486. Plesiosaurus Pentagonus, Cuv. Plesiosaurus Trigonus, C'jv. Gen. 3. Saueocephaluc, Harlan. Saurodon, Hay. Teeth like incisors, placed in pits with a regular hole on the inner edge of the Alveola. Saurocephalus lanciformis. Hay. Amer. Phil. Trans, y. 1. 16. Saurocephalus, Leanus, 1. c. 1. 16. Section 11. Squamata. Tongue free, organs of generation double, ossa quadrata separated from the skull. Order I. Sauri. Mouth not dilatatile, skin covered with various unequal scales. 24 CLASS REPTILIA. ~~ Division I. Tongue long, deeply bifurcatedy teeth placed on the inner edge of the jaws * Gen. I. Mo3jiTOR. Tongue retractile, head covered with small polygonal shields. Inhabiting the old world, living near water, 1. Tail compressed, nostrils subapical, or medial, open; Monitor, nob. Two Banded Monitor, Mon. bivittatus, nob. Ttipinambis bivittatus. Kuhl. Black, with five cross rows of white spots or rings, back of head spotted, above banded ; cheeks, with two black streaks; nostrils subapical, India. Jun., more spotted. Tup. ewilis. Reinw. Mss. Mus. Brit. Laced Monitor, Mon. Varia,u. Lacerta Varia, Shaw. White. Voy. t. p. 253. Phil. Voy. t. at p. 279. Nostrils one-third from the tip of the nose ; toes short ; sub- equal. New Holland. 1 up, Marmoratus, Oppel. of Manilla, appears to be a variety. Mus. Brit. Yellowish Monitor, Mon. Flavescens, nob. Uran. Russelii, Schegel. Yellowish, brown netted, scales very large ; toes very short, nearly equal, India. Mus. Ruppel. Eyed Monitor, M'in. Ocellatus,Yon Heyden Ruppel Atlas, t. Yellowish brown, with pale eyed spots, dorsal scales oblong, * All the species of the genera of this section require a complete re> examination, the following is only an attempt at noting the species which I have seen named in collections. 25 CLASS REPTILIA. surrounded by small granular scales, ventral scales square. Dongola, Senegal. Mus. Ruppel. " Chrsen Spotted Monitor ^ Mon, Chlorostigma, nob. Black ; head, body, and tail, white spotted ; scales, rather large; toes very unequal, nostrils one-third from the tip. Young, belly whitish, black spotted. Rawack, Mus. Paris. Timor Monitory Mon. Timorensis, nob. Tup. virido- maculatusy Daud. Like T. Bengalensis, but the scales are larger, especially those of the tail, toes longer, nostrils more than one-fourth from the tip. Timor. Mus. Paris. . . , Green Monitor. Mon. Viridis. Nostrils medial, scales large, yellow, with large dark spots, Mus. Leyd. Elegant Monitor. Mon. Eccanthematica, n. Lac. Eocanthe- matica, Bosc, t. 5, f. 3. Tup. Cepedianus, Daud. t. 29- Lac. Argua, Daud. from Seba J , t. 85. f. 3. Uran Elegans, Mer. Nostrils medial, with a black streak from the eye ; head with black edged white spots, throat black spotted, belly black banded. Africa. Brown Spotted Monitor, Mon. j^engalensis, n. Tup. Ben- galensis, Daud. Uran Punctatus, Mer. Nostrils medial, head black, dotted ; back, black dotted and slightly eyed ; throat black dotted ; scales rather large ; toes short. India. Lac. Dracaena, Lin. fron. Seba. 1, t. 101, f. 1, now in Mus. Par. The Tup. Candivertus, Daud. has the nostrils medial, and is verv like this species. 26 CLASS REPTILIA. Clouded Monitor. Mon. Nehulosus. Nostrils medial, above green brown, white dotted, loins and base of tail, with bands of eyed spots ; beneath white, black netted, toes unequal, rather long, head long, angular. Java. Mus. Pa'-. . . Ornamented Monitor. Mon. Ornatits, Tup. Ornatus, Daud. Ann. Mus. II. t. 48. Lac. Capensis, Sparrm. Nostrils medial, above black, beneath white ; throat, with nine black bands, nape, with four or five curved lines, and with seven bands of round white spots. Africa. Mus. Leyd. Nilotic Monitor. Mon. Niloticus, Lac. NiloticuSf Hasselq. Geoff. Rept. Egypt, t. 3, f. 1. Pale, varied and eyed with brown ; toes very unequal. North Africa and India. Mus. Brit. Heraldic Monitor. Mon. Heratdicus. Nostril submedial, rather nearer the eyes ; head with regular and variously placed white lines ; nape and back with a ring of eyed white spots Toes short, subequal. * Be'iga^ Mus. Paris. Varied Monitor. Mon. Pulcher, Leach. Uran Eiegans, Merrem. Lac. Monitor, Linn. Tup. Stellatus, Daud. n. t. 31 ? Seba, 1. 1. 94, f. 1, 2. y. t. 30. f. 2. y. 68. f. 2. Nostrils submedial, brown ; head and neck with concentric white rings of dots ; back, white dotted, with nine bands of round white dots; beneath white, brown dotted. Central and South Africa. Mus. Brit. II. Tail round, nostrils large, valvular, placed near the orbits. Psaramosaurus. Grey Ouran. Mon. (P-j Scincus^ Licht. Tup. Grisseus, Daud. Geoff. Rept. Egypt, t. 3.f. 2. t. 4. f. 14, 15. 27 CLASS REPTILIA. Grey, dotted with brownish scales, nearly square, edged with email grains. North Africa. Mus. Brit. White throated Ouran. Mon. P. Albogularis. Tup. AlbO' gularis, Daud. iij. t. 32. Head, and neck, beneath, and sides, whitish, brown, dotted with two white lines, from the eye to the nape. Inhab. N.B. The Dragon figured by Klein Tent Herpet, t. is ian animal of this genus which has had the head united to the skin of the body, just behind the fore legs, so that it appears only to have two legs. Gen. II. HoLODEEMA. Wiedeman. Tongue contractile.'* Head broad, depressed, covered with crowded, irregular, many sided, convex, tubercular shields. Palate not toothed ; body squamulose with parallel trans- verse ridges of larger distant tuberiform long scales ; abdominal scales, four sides, smooth ; femoral pores none ; tail round. . _ Horrid Monoonllo. Holoderma Horridum. Wied. Tacky- dermun Horridum^Yy 3igier, 11. i.\Q. Brown, yellow spotted, tail with close yellow rings. New Spain. Gen. 111. Teius. Tongue contractile, head shielded, palate mostly toothed. Femoral pores distinct. Found only in America. I. Abdominal scales square, as long as broad , smooth ; dorsal scales Reeled. Tail compressed^ keeled. Crocodilurus, Spix. Ada Gray. Great Dragon, Lacepede. Common Ada, Teius (A.) Crocodilus, Merrem. Lacep. t. 9. Daud. t. 28. Back with scattered keeled scales. Guiane. 28 CLASS REPTILIA. Double Crested Ada. Teius (A.) Bicarinata, Lac. Bica- rinata, Gm. Tup. LacertinuSy Daud. Croc. Amaxoni- cusy Spix, t. 21. Back with equal keeled scales, belly with eight series of scales. South America. Young, side of body spotted. Croc. OceUatuSy Spix, t. 22. f. 1. II. Abdominal scales smooth, longer than broad; dorsal scales smooth; tail roufid ; collar small. Teguixin. Variegated Safeguard. Teius. {T.) Monitor, Merrem. Lacerta Teguixin, Lin. Seba, i. t. 96. f. 23. t. 97* f« 1> 5. t. 99. f. 1. Tup. Nigropunctatus, Spix, t. 20. Pr. Max. Beytr. t. Black, with bands of yellow spots ; beneath yellow ; tail, black and yellow-banded. Tup. Maculatus, Daud. Tup. Monitor y Spix, t. 19., appears to be the young. According to Mr. Caup''s account of his genus Eocypuestes, which he says, has the scales of the Monitor, and the tongue, teeth, head, plates, and country of Teius, it roust belong to this subgenus. He described the back as finely and equally scaled, and the palate toothless. III. Abdomirial scales smooth, broader than long ; tail round ; dorsal scales smooth ; collar none. The young streaked with black on the sides. Ameiva. The Ameiva. Teius Ameiva Vulgaris., Licht. Spix, t. 23. Lac Ameiva, Lin. Ameiva ArguSy Fitz. Green, black spotted, sides with four bands of black-edged white spots. Young Teius OceUifer, Spix. Lettered Ameiva. Teius {A.) Litterata, Daud. Seba, i. 29 CLASS REPTILIA. - t. 83. and Lac. GutturosOi Daxid. from Seha. ij. t. 103, f. 3,4. Blue green, varied with oblong black dots ; sides with white- eyed black cross-bands; neck beneath plaited. South America, not Germany. Blue-headed Ameiva. Teius {A.) Cceruleocephalus, Seba. i. t. 91,f. 3. Head blue ; dorsal line white, with two yellow lines along each side ; thighs white spotted. Blue Ameiva. Teius {A.) Cyaneus^ Lacep. i. t. 31, Seba. ij. t. 105, f. 2. Bluish, sides with roundish white spots. Side-streaked Ameiva. Teius {A^ Lateristriga, Cuv. Seba, i. t. 90, f. 7. (Spix, t. 24, f. 1 ?) With a dark white-edged line on each side. Striped Ameiva. Teius {A.) Lemniscatns, Lac. Lemnisca- tus, Gmel. Seba, i. t. 92, f. 54. Daud. ij. t. 36, f. 1. Dusky blue, back with eight white lines, tail round, limbs white spotted, with three white lines. Three-streaked Ameiva. Teius {A.) Tritceneatus, Spix. t. 24, f. 2. Checkered Ameiva. Teius (A.) Tesselata, Say, Long. Exp. ij. 50. Black, with nine or ten longitudinal, and eighteen or twenty cross lines ; dorsal scales small, beneath whitish. Tail long, brownish olive, black spotted. North America, Say. Blue and black Ameiva. Teius (A.) Cya7iomelas^ Pr. Max. Beytr. v. t. Head short ; tail and back black, with a central broad band, and the sides with two narrow whitish blue streaks. Brazils. 90 CLASS REPTILIA. Green Ameiva, Teius {A.^ Viridis, Merrem. Lacerta. Teyou, Daud. Ameiva Teyu, Lecht. Top of head and dorsal line green ; body olive violet, with six white longitudinal lines ; throat and belly silvery white. Collared Ameiva y Teius (A.) Collaris. Agama Collaris, Say, Long. Exp. Olive, with five or six alternate broad dusky and narrow yellow or grey spotted fibrous bands ; sides greenish yellow ; sides of neck fibrous, varied with red and black bands, be- neath pale. North America, Arkansa Territory. IV. Abdominal scales lanceolate^ heeled ; tail round ; collar distinct. Kentropyx, Spix. Intermediate Centropyce. Teius (C) Intermedius, Schlegel. Back with three pale lines ; dorsal scales minute. Surinam, Mus. Leyd. Spurred Centropyoo. Teius (C) Calearatus, Spix. t. 22, f. 2. Scales of the back and throat granular. Males with two small spine-like scales on each side of the vent ; scales of the belly^ legs, and tail, keeled, green ; sides of the back blackey. Brazils. Striated Centropyx. Teius (K.) Striata. Lacerta Striata, Daud. Pseudo-Ameiva Striata, Fitz. Merrem. Wetter. Ann. i. t. 1, Pr. Max. Beytr. xiii. Grey, sides blue, with two longitudinal brown lines ; abdo- minal scales twelve rows ; dorsal scales keeled. Genus IV. Laceeta. Tongue contractile ; head shielded ; palate toothed ; lateral line, none ; the bones of the skull advanced over the temples 31 CLASS REPTILIA. and orbits ; femoral pores distinct. Inhab. temperate parfj of Old World. 1. Back with granular scales ; belly with a collar of large plates ; femoral pores numerous. Lacerta. A. collar separate the ivhole length from the chest-plates ■ hy small granular scales ; the frontal plate nearly as broad before as behind. Eyed Lizard. Lac. Ocellata, Edw. t. 202. ^elly with eight or ten rows of plates ; occipital plate large, Young. Lac. Leplda^ Daud. iij. t. 37- f. 1. South of Europe. Lac. Rhombicay Merrem, Lac. Jamaicensis, Daud., are from Edwards' figure. Green Lizard. Lac. Viridis, Lin. Daud. t. 34., and Lac. Bilineata, Daud. t. 55. i. 1. Scales of back slender, keeled ; of tail, sharply keeled ; col- lar free, serrated ; occipital plate rudimentary ; abdominal plates six-rowed ; hinder legs not reaching the armpits. Eu- rope. Length, twelve inches. • Wall Lizard. Lac. Muralis, Merr. Daud. iij. t. 8. f. 1. Lac. Vivipara, Jacc^. Act. Helv. j. t. 1. Scales of back and sides smooth ; of the tail, octant above, slightly keeled ; collar entire, adnate ; belly, scales six-rowed ; hinder legs reaching the armpits ; length five inches. Schreber'*8 Lizard. Lac. Schrebersiana, Edw. An. Sci. t. 5. f. 5. Lac. Fusca, Daud. Occipital plate rudimentary; abdominal plates six-rowed ; temples covered with granular scales and a cheek-plate ; hind legs long. Mus. Par. Cape Lizard. Lac. Lalandii, Edw. An. Sci. t. 5. f. 6, and t. 8. f. 5. Occipital plate rudimentary ; abdominal plates six rowed ; 32 CLASS REPTILIA. temples covered with granular scales only ; hind legs short, ith medial scales before the vent. Cape. Length thirteen inches. . Duges Lizard. Lac. Dugesii, Edw. t. 6. f. 2. Occipital plate rudimentary ; belly plates, six-rowed ; temples with granular plates only ; hind legs long ; one medial plate before the vent. Madeira. Edwards* Lizard. Lac. Edwardsiana^ Duges. Abdominal plates eight-rowed ; scales of back imbricate, pointed ; four sub-maxillary plates on each side ; limbs slender ; thighs cylindrical. Shore of the Mediterranean. B. Collar free the whole length ; the frontal plate small, and narrowed behind. Olivier'' 8 Lizard.^ Lac. Olivieri, Ardouin. Sav. Rept. Egypt, t. 2. f. a Abdominal plate six or eight-rowed ; one large medial scale before the vent. North Africa. Savigny's Lizard. Lac. Savigniiy Ardouin. Sav. Rept. . ; : Egypt. 1. 1. f.8. Abdominal plates six or eight-rowed ; three larger medial plates before the vent. Egypt. Shielded Lizard. Lac. Scutellata, Ardouin. Sav. Rept. Egypt, t. 1. f. 2. Abdominal plates twelve or fourteen-rowed ; interparretal plate rudimentary ; three large medial scales before the vent ; the hinder larger than the side ones. .Egypt. DumerilPs Lizard. Lac. DiimeriUii, Edw. Abdominal plates twelve or fourteen-rowed ; interparretal pL tea rudimentary ; three larger medial scales before the » 33 CLASS REPTILIA. . vent, the hinder smaller than the side ones. Senegal. Mus. Par. KnoaPs Lizard. Lac. Knoxii, Edw. t. 6. f. 8. Abdominal plates twelve or fourteen-rowed ; interparietal plates large. South Africa. Variable Lizard. Lac. Variabilis, Licht. L. Variahilis, L. Jrguta, L. Velooc, and Z. Cruenta, Pallas. Abdominal plates fourteen or six teen- rowed ; head rather acute ; scales small, rather triangular or roundish, smooth ; caudal scales closer keeled. Perhaps L. Deserti, Lepech, and L. Corunea, Merrem. Tartary. C. Collar united in the middle to the abdominal plates, free on the sides. Panther Lizard. Lac. Pardalis, Licht. Abdominal scales ten rowed ; head rather acute ; scales of the back smooth ; of the tail rhombic above, keeled ; tail little longer than the body. Egypt. Bosc^s Lizard. Lae. Boscii, Daud. iij. t. Q6. f. 2. Lac. Velow, Edw. Savig. Kept. t. 1. f. 9. Abdominal plates ten-rowed ; scales keeled ; cervical ones small ; dorsal large, rhombic, blunt ; tail twice as long as the body. Egypt. Red-spotted Lizard. Lac. Ruhropunctata, Licht. Savign. Kept. Egypt, t. 1. f. 1 .? Abdominal plates ten-rowed ; head acute ; scales of the back small, smooth ; of the tail large, sub-quadrate, olive, keeled ; tail twice as long as the body. Egypt. Spotted Lizard. Lac Guttulata, Licht. Sav. 1. 1. f. 8 .^ Abdominal plates eight-rowed ; head rather acute ; scales of 34 CLASS REPTILIA. back very small ; of tail sub-rhombic, above keeled ; tail long. Egypt. ^ . Grammic Lizard. Lac. Grammica, Liclit. Sav. 1. 1. f. ^. Abdominal plates fourteen or twenty-rowed ; heed acute ; scales of the back small, scarcely keeled ; of tail rhombic, keeled ; collar sometimes obsolete ; tail half as long again as the body. Egypt. Indian Lizard. Lac. Leschenaultiiy Edw. t. 6. f. 9. Abdominal plates six-rowed. Inhab. Coromandel. II. Back with granular scales; belly with small plates ; collar indistinct. Psammodrom'us. Fitz. Spanish Lizard. L. (Fsammodromus) Hispanicus, Fitz MSS. See also Var. of Zac. ^rammca, Licht. Blackish blue, lighter underneath. Spain, III. Back and tail with keeled scales, belly with smooth imbricate scales, collar none, femoral pores numerous. Algyra Cuv. Common Algyra. Lac. (^Algyra) Cuvieri, Lac. Algyra, Lin. Tail long, round, brown, beneath yellowish, with two yellow streaks on each side ; length four inches. Spain. IV. Back and tail with lanceolate imbricate keeled scales, abdomen with smooth imbricate scales, collar none^feiuoral pores none. Tropidosaurus, Boie. Mountain Lizard, Lac. (^Tropidosaurus) Montanus, Boie. Olive dark metallic green, blackish on the sides, and with a narrow black dorsal, and two narrow white lines on each side. Java. I have seen this genus both at Paris and Leyden, it has much more the appearance of a scinct than a lizard, but I could not see its tongue, which I suppose caused Cuvier to place it in this group. D 2 35 CLASS REPTILIA. Gen. V. Tachydeomus. Oppel. Tongue contractile ; head shielded ; back, belly, and tail, with square keeled scales ; lateral line distinct, with small scales ; femoral pores one on each side the vent ; body very long ; feet very far apart and small. Chinese Tachydrome. Tachyodromus Sexlineatus, Daud. iij. t. 39. Silvery, with six brown bands. Tail three or four times as long as the body. Java and China. Common in insect boxes from China. The other species, Quadrilineatus, Daud. in the Paris Museum, is in too bad a state to distinguish it from the former. Is this Lac. Sept. of Linne .'* Section 11.^ Tongue short, contractile, end slightly lobed. Gen. I. Iguana. Teeth three lobed or toothed, placed in the inner edge of the jaw. Body and head compressed, palate mostly toothed. A^ Ribs simple ; throat dUatile ; head short ; back crested ; palate toothed ; femoral pores numerous. Iguana, nob. 1. TaU equally scaly ; toes unequal ; head shields jlatish ; dewlap denticulated. Iguana. Common Guana. Iguana Tuherculata, Laur. Squamosa, t. 5, I. Viridis, t 6, and I. Emargirata, t. 8, Spix. Sides of neck with con.'' ex scales ; front edge of dewlap toothed ; sides of lower jaw with orbicular plates. Var. Nose plates prominent, hornlike. Iguana Corriuta, Em. t. 4. f. 4. Young, doisul spines lower. Iguana Ccerulea, Daud. and /. Lophyroides, Spix, t. 9. South Ainerica, Mus. Brit, 36 CLASS REPTILIA. Smooth-necked Guana. Iguana Delesatissima, Laur. J "^Nudicollisy Merrem. Mus. Bresl. 1. 13. f. 1. Sides of neck smooth ; front of dewlap slightly toothed ; sides of lower jaw with small plates. Brazils and Gauda- loupe. % Tail equally scaly ; toes unequal ; head shield, jlaU ish ; dewlap entire. Brachylophus. {Les Brachylophes.) Cuv. Banded Guana. Iguana {Bi'achylophus.) Fasciatus, Brongn. Bui. Soc. Philom. t. 61. f. 1. Green, brown banded. South America, not Java, as said by Brongniart. Mus. Brit. 4. Tail compressed, with rings of spinous scales ; toes nearly equal.; head shields conveof. Amblyrhynchus, Bell. Rough headed Guana. Iguana (A.) Cristatus, n. BelU Zool. Jour, i. t. 12. Brown, sides and belly yellow ? Galapagos. Black Guana. Iguana {A.) Ater, nob^ Nearly black ; beneath dusky. Galapagos. B. Ribs simple, throat with a cross fold. I. Head long, scuteUated ; hack crested ; tail with rings of spinous scales ; back with square scales ; Jemoral pores distinct. Cyclura nob. Palate toothed. Ctenosaura. Weigmann. Cycluroid Guana. Iguana. (Ctens.J Cyclurcides. n. Cteno- saura Cycluroides. Wiegmann, Iris xxi. Dorsal crest continued ; scales of back and sides, obsoletely 37 CLASS EEPTILIA. keeled ; of sacrum mucronate. Palatine teeth many, small ; tail very long and round, crested with a series of spines. Mus. Berl. Spiny Tailed Guana. Iguana. (Ctenosaura) Acanthura. Lac. Acanthura. Shaw. Zool. iij. 326. Cyclt^ra Shawii, Gray Ann. Phil. Pale brown ; dorsal crest interrupted over the sacrum ; tail cylindrical^ with a ring of depressed scales between each ring of spiny ones ; palatine teeth few, large. Mus. Brit. Armed Iguana. Iguana (Ctenosaura) Armata. Head long, pyraraidical ; tail with rings of spines, having two rings of depressed scales between them at the base ; teeth three or five lobed ; palatine teeth small, in one row. Mus. Bell. Allied Iguana. Iguana (Ctenosaura) Similis. Grey, black dotted, body with four oblique dark bands ; occiput forming a concave band behind ; dorsal crest low but continued over the sacrum. Teeth blunt, three lobed ; palatine on two raised lines on each side. Head two, body nine inches. Mus. Bell. Lancet Toothed Iguana. Iguana (Ctenosaura) Lanceolata, Grey, black dotted. Tail black banded, base black spotted ; head scales rather large, convex ; dorsal crest, completely interrupted over the sacrum. Palatine teeth, in two bunches ; the teeth of the jaw, long lanceolate sharp-edged, two or three lobed ; femoral pores six. Length of body and head fourteen, of tail twenty-four inches. Mus. Bell. BelVa Iguana. Iguana (Ctenosaura) Bellii. Gray MS. Grey, black netted ; dorsal and caudal crest of short, broad scales, interrupted over the sacrum. Scales of the occiput and 88 CLASS REPTILIA. sides of the head, convex ; scales of the mastoid ridge, small, conical. Palatine teeth in two bunches ; tail, base smooth, middle and end with distant rings of slightly elevated scales, having four rings of small scales between each ; toes short, thick. Mus. Bell. Length of body eighteen inches. Iguana Cyclura of Cuvier may be probably one of these species, but his account of it is too general to distinguish it. Palate toothless. Cyclura. Harlan. . Keeled Guana. Iguana (Cyclura) Carinata. Cyclura Carinata. Harlan. Acad. Nat. Sci. Phil. iv. t. 15. Deep dirty brown ; dorsal crest interrupted over the shoul- ders and loins ; scales of body uniform ; legs and feet minutely square. Tail above keeled, with three rings of de- pressed scales between each ring of spiny scales. Inhab. Turk's Islands, Bahama. Round Guana. -Iguana (Cyclura) Teres y n. Cyclura Teres. Harlan. 1. c. t. J 6. Dark green, teeth small, uniform pointed ; dorsal crest in- terrupted over the loins ; scales of the sides square, of the thighs and legs bristly. Tail cylindrical, with tv/o rings of depressed scales between each rings of spines. Tampico. Clouded Guana. Iguana (Cyclura) Nuhila. Gray. Blue with oblique bands of roundish spots ; tail compressed, with four rows of small depressed scales between each ring of spines. South America ? Brit. Mus. Figured here under the name of Clouded Lizard. L. Nehulosa. II. Head covered with convex scales, and often some ^aper- ciliary plates ; hack, covered with small scales slightly crested, femoral pores none, Ophyessa, Boie. 1. Tail, simple, compressed, dorsal scales, minute, (Xiphura, nob.) 39 CLASS REPTILIA. Sword Tailed Ophyessa. Oph. Superciliosay Lacerta, Lin. from Seba, I. t. 199. f. 4. Lophyrus JCiphurus, Spix, t. 10, good. Head with sub-equal, keeled scales, occiput with cross rows of convex tubercles. Back with small, belly and limbs and tail with larger keeled scales. Brazils. Mus. Brit. Pearly Ophyessa. Oph. Margariiaceus, Lophyrus, Spix, t. 12, f. 2. Back and tail sb'ghtly crested, supercilliary scales, small. Brazils. Loph. Auronitens, Spix, t. 13, scarcely appears to differ from this except in age. Lozenge Ophyessa. Oph. Rhomhifer, Lophyrus, Spix, Braz. t. 11, adult. Loph. Alhomuxillaris, Spix, t. 13, f. 2. Young, Agama Catenata, Pr. Max. t. Brown, beneath paler, limbs pale banded, back with two sinuous, bro^v^l bands, forming a scries of rhombic spots, super-orbital scales small. Brazils. 9. Tail round, slender, with imbricate scales. Plica, nob. Brazilian Ophyessa. Oph. Braziliensis. Head with rather convex, keeled scales, superciliary ones rather smaller, bluish; chest, inside of legs, belly, and vent, whitish. Scales of back and throat granular, of belly rather larger, of limbs and tail largest, keeled ; tail round; back and loins with a small toothed crest. Brazils. Painted Ophyessa. Ophyessa Picta, Agama, Pr. Max. t. Lophyrus Ochrocollaris, Spix, t. 12, f. 2. L. Panthera. Spix, Braz. t. 13, f. 1. Young. Brown ; body, face and limbs darker banded ; beneath pale. Superciliary scales oblong; occipital plate, distinct; back slightly crested. Brazils. 40 CLASS REPTILIA. Umber Ophyessa. Ophyessa Plica. Lac. Plica, Lin. Agama Plica, and A. Umhray Daud. Loph. Agamoides, Gray. Ann. Phil. Back with minute scales, sides of neck behind the ear with four bundles of spines. . • . . . 3. Tail round, tapering, with spinose, whorled scale ; ears spinose in Jront, hack and helly scaly. Tropidurus, Pr. Mace. . . . Palate toothed, Oplurus, Cuv. Collared Tropidurus. Trop. Torquatus, Pr. Max. t. Agama Taraguira, Licht. Green ; black stripe on each side the neck ; eyelid black rayed, back with lines of spot when young. Mus. Brit. See Agama Nigricollis, Spix, t. 16, f. 2, but Spix says it has no palatine teeth. This may be, Ephimotes, Cuvier 47, but certainly it has no pores. Tubercular Tropidurus. Trop. Tuberculata, Gray. Agama Tub. Spix, t. 15, f. 1, 5 2, Chamoeleopsis, Wiedemann, MSS. Mus. Berl. Hemandy's Chameleopsis. Chamoeleopsis Hernandesii, ' Wiedemann, MSS. Gray. Mus. Brit. Black, white speckled ; scales minute, thin. Mexico. Mus. Brit. 45 CLASS REPTILIA. 411. Head elongate^ simple ; toesy last Joint hut one dilated, pear-shaped beneath. Anolis, Merrem. Anolius, Cuv. Equestrian Anolis. Anolts Eqicestris, Merrem. Cuv. R.A. t. 5. f. 2. Purple ash, scapular band white ; dorsal line toothed. Edwards Anolis. Anolis Edwardsii, Merrem. Edw. Glean. i. t. 245. f. 21. Uniform. slate colour, and nearly allied to Equestris. Two-spotted Anolis. Anolis Bimaculata, Daud. Lac. Bimaculata, Sparmann, Swed. Acad. v. t. 4. f. 1. bad. Cuvier's Anolis. Anolis Cuvieri, Merrem. Anol. Velifer, Cuvier, R.A. t. 5. f. 1. Lined Anolis. Anolis Lineatus, Daud. Rept. t. 48. f. 1. Lac. Strumosa, Lin. Seba, ij. t. 24. f . 4 ? Dotted Anolis. Anolis Punctatus, Daud. t. 40. f. 2. Gouty Anolis. Anolis Fodargicus, Daud. Catesby Car. t. 3. Violet Anolis. Anolis Violaceus, Spix, Braz. t. I7. f. 2. Brazils. Green Anolis, Anolis Viridis, Pr. Max. Good. • . Brazils. All these species are so very much alike that it is impossible to distinguish them without long descriptions ; indeed the genus requires a complete revision, which I hope shortly to be able to publish : the following is very distinct. Slender Anolis. Anolis Gracilis, Pr. Max. Head elongate, slender, two keeled in front ; back slightly keeled. Dull brown., with seven cross-bands of white spots ; throat orange. Brazils. 46 CLASS REPTILIA. IV. Head angular ; body with smooth scales^ larger be- neath ; back simple ; tail round ; toes simple ; femoral pores distinct. Polychrus, Cuv. Common Marble. Polychrus Marmoratus, Lac. Lac. Mar- morata, Lin. Spix, Wagler, t. 21. Eyelids black rayed ; scales above, small, blunt, beneath lanceolate, keeled, of the tail largest. P. Virescens and P. Strigiventer, Wagler, and P. AcutlrotriSi Spix, t. 14. appear to be scai-cely distinct, though they are said to have no femoral pores. Polychrus Fasciatus, La Porte, if from Molucca, must be an Agama. See also Jgama Molmaii, Lesson. Bui. Sci. from Chili. Genus III. — Gecko. Head and body depressed ; scales small, tubercular, usually larger beneath ; toes five, sub-eq^ual, generally furnished with transverse scales beneath ; claws retractile ; throat simple ; palate toothless ; eyes large, nocturnal. Toes with a single row of broad cross scales beneath ; last joint compressed, attached. Platydactylus nob. A. Toes free, clawless, dilated; thumb small. Phelsuma. Clawless Platydactile. Gecko Inunguis, Cuv. R. A. t. f. 1. . Femoral pores none. Violet ; beneath white, with a black streak on each side. Isle of France. Eyed Platydactyle. Plat. Ocellatus. Gecko, Cuv. R. A. tf. 4. ~ ■ '■ Femoral pores none. Grey, with white-eyed brown spots. Isle of France. Cepedian Platydactyle. Plat. Cepedianus. Gecko, Merr. Cuv. R. A. t. f. 5. 47 CLASS REPTILIA. Orange, marked with blue, and a white streak on the side ; femoral pore distinct. Isle of France. . Ornametited Platydactyle. Plat. Ornatus. Phelsumaf Gray. Ann. Phil. Brown ; back with six rows of red oval spots. New Holland. B. Toes, Jirst and fourth clawed, free, dilated ; pores no-ne^ Tarentola, Gray. Fasciculated Gecko. Plat. Fascicularis. Gecko, Daud. Grey ; head rough ; back with twelve series of groups of three or four small acute spines. South of Europe. Annulated Gecko. Plat. JEgyptiacus. Gecko, Cuv. Gecko Annulaire, Geoff. Egypt, t. 5. f. 7- Grey; scales granular, with rows of large, flat, simple, round tubercules. Egypt. American Gecko. Platydactylus Americanus, Gray. Pale, lined and varied with brown; scales granular, with twelve or fourteen close rows of blunt, simple, equal tu- bercles. New York. Mus. Par. C. Toes clawed, thumb clawless, suhanal pares distinct. Gecko. Toes free, dilated the whole length. Gecko, Gray. Common Gecko. Gecko Guttatus, Daud. t 49. Lac. Gecko, Lin. Body black, with white spots; scales minute, with low rounded simple tubercles. Java. Mus. Brit. Chinese Gecko. Gecko Reevesii. Black, with cross band of white spots, and some obscure rather larger tubercular scales. China. 48 CLASS REPTILIA. Madagascar Gecko. Gecko Madagascariensis. Gray. Scales smoo,th, with large tubercles on the sides ; femoral and subanal pores in two straight diverging lines ; young, with a black a.id white lateral line. Madagascar. - Banded Gecko. Gecko vittatus, Houttyn. Act Ulys. ix. t. 11. f. 2. Daud. iv. t. 50. Brown, with a white dorsal band, forked over the head and the base of the tail. Java. D. Toes free^ scarcely dilated. Eublepharis, Gray. Stenodactylus, Part. Licht. Hardwicke''s Gecko. Kublepharis, Hardwickii, Gray. Grey, brown banded ; back tubercular. Java. Ascolohates Stenodactylus. Licht. Savigny, Egypt. Phyllo- dactylus Marmoratus. Mus. Franc. St. gvAtatus, Cuv. Scales above small; white spotted; tail, black, with irre- gular white rings. Egypt. 'H. Toes dilated, webbed, sides of body and tail margined. Pteroplura, Gray. Ptychozoon, Kuhl. HorsJield''s Gecko. Pte. Horsfeldii, Gray. Lac. Homalo- cepkalOi Creicht. Brown, with darker cross bands ; beneath pale ; tail, when reproduced, roundish, not pinnated. E. Toes and thumb clawed, subwebbed, sides sub^nned. Leache^s Gecko. Gecko Leachianus, Cuv. Grey, with large white spots ; scales uniform, smooth. II. Toes, with a series of cross scales, divided by a groove, beneath, last Joint compressed, sheathed. Thecodactylus. £ 49 CLASS REPTILIA. a. Toes dilated to base, scales under toes transverse, tkumh clawless, femoral pores, none. Thecodactylus, Cuv. Smooth Sheath claw. Thecadactylus lasvis, Daud. Tail round, conical ; grey, brown marbled ; tail when repro- duced, turnip shaped. Gecko rapicauda, Daud. iv. t. 31. b. Toes, base, slender ; scales 2 or Z at the tips. Phyllodac- tylus. Gray. Beautiful sheath claw. Phyllodactylus pulchellus. Gray, Soic. Zool. c. Tail round, femoral pores, no7ie. Porphyry sheath clatv. Thee, porphyreus. Gecko, Daud. Pale reddish, marbled with many roundish pale spots, Java. d. Scales under the toes radiating, toes, slender, tail round, slender, femoral pores, distinct. Ptyodactylus, Cuv. Egyptian sheath claw. Thecodactylus Lohatus, Gecko, Geoff. Kept. Eypt. t. 3, f. 5. Gecko Jzcolobates, Merrem. Pale brown, with larger scattered scales. Egypt. Ptyodac- tylus Guttatus, Ruppel. t. 4, appears scarcely distinct. 6. Toes bare, webbed; tail, body, and limbs, margined. Uroplates. Fimbriated sheath claw. Thecodactylus Jimbriatus, Gecko, Daud. iv. t. 52. Pale brown, scales minute, with scattered larger ones. Mada- gascar, Mus. Brit. Gecko Sarroube, appears to differ very little, if at all, and Lacerta Caudiverbera, Seba, ij. t. 103, f. 2, is only known from La Feuille's account. III. Toes, base dilated, with a double row of oblique scales beneath, last joint compressed. Hemidactylus. Warty Gecko. Gecko Verrucosus, Cuv. Lac. Turcica. Lin. Edw. t. 204 ? Reddish grey ; back scattered with roundish tubercles ; subanal pores only. 50 CLASS KEPTILIA. Mahuia Gecko. Gecko Mabuia, Cuv. Grey, varied with brown ; back with about six or seven rows of small scattered tubercles on each side. South America. It is very diflBcult to determine the species of this genus as the individuals vary in the size of the larger tubercular scales, and in the presence or absence of the femoral pores, which have hitherto been considered good specific characters. They are however named as follows. Thecodactylus Policaris, Spix, t. 18. f. 2. Gecko Aculeatus, Spix, t. 18. f. 2, 3. Gecko Spinicauda, Houttyn, Act. Ulys. ix. t. Gecko Trihedrus, Daud. Stellio Platyurus, Schn. Stellio Argyro- pus. Tiles. Mem. Acad. Peiersb. viii. t. ii. a., and HemU dactylus Gronosus, Ruppell. Atlas, t 5. f. 1. The two last are said to have no pores. Margined Hemidactyle. Hemidactylus Marginatus, Cuv. Sides of body and tail, hinder edge of thighs and legs, slightly fringed. Bengal. Mus. Ind. Comp. IV. Toes slender, compressed, free, and fringed on the edgCy end compressed, bent and arched. Cyrtodactylus, Gray. a. Tail round ; pores none. Cyrtodactylus, Gray. Gonyo- dactylus, Kuhl. Stenodactylus, Lichi. Gymnodactylus, Spia^. Beautiful Cyrtodactyle. Cyrtodactylus Pulchellus, Gray, Zool. Jour. Pale, with chocolate cross-bands. India. Marbled Cyrtodactyle. Marmoratus Gonyodactylus, Kuhl. . MSS. A^sh brown, marbled with darker spots, beneath ash. Java. Eyed Cyrtodactyle. Cyrtodactylus Ocellatus, Gray. Pale brown, with ocellated yellowish spots. INIus, Brit. K 2 51 CLASS REPTILIA. Brazilian Cyrtodactyle. Cyrtodactylufi SpLviiy Gray. Gym,' nodactylus Geckoides, Spix, t. 18. f. 1. Brown, back with six series of small angular warts. Brazils. Piping Cyrtodactyle. Cyrtodactylus ? Pipiens. Stenodacty- lu8, Licht. Lac. Pipiens, Pallas. Tail, not annulated. b. Tail depressed, subanal pores distinct. Phyllurus, Cuv. Flat-tailed Cyrtodactyle. Cyrtodactylus Platura. Lacerta, Shaw. Agama, Merrem. Phyllurus Cuvierii, Bory. White Voy. t. 32. f. 2. Tail cordate ; grey, brown marbled, scales, with scattered pointed tuber<:les. yHius's Cyrtodactyle. Cyrtodactylus Nilli. Phyllurus ^ Bory. Diet. Class, t. Tail bluntish, spathuliform, above brick-red with a black half collar and three bands. c. Toes free, ending in a small simple round disk, without any plates beneath; clau^s retractile. Sphoeriodactylus, Gray. Banded Spheriodactyle. Spheriodactylus Sputator. Gecko, Lacep. 2. O. t. 28. f. 1. Reddish, with brown cross-bands. See also Lac. Sputator Var. Lacep. Kept. i. t. 28. f. 2. Lac. Sputator, Sparmann. Nov. Act. Stock. 1784. t. 4. f . 1, 3. Gen. IV. — Chameleon. Teeth placed on the upper edge of the jaws ; toes united into two groups to the claws; tail prehensile; body com- pressed, covered with squarish scales. Africa or India. 62 CLASS REPTILIA. a. With a series of spines along the belly a7id chin. Common Chameleon. Chameleo Vulgaris. Lac Jfricana. Occiput keeled, arched ; scales equal. Grey, banded and streaked with yellow. Africa and India. Beaded Chameleon. C. Verrucosus, Cuv. Ch. Monilifer, Boie. Occiput keeled, arched ; with larger scales on the sides. Senegal Chameleon. Chameleo Senegalensis. Ch. planiceps. Mer. Seba, 1 . t. f. 2. Ch. Gymnocephalus, Lacep. Occiput flat ; side parallel edges not margined. Senegal. Cham. Galeoratus appears to be a variety of this species. Eared Chameleon. C. Dilepis. Leach. Gray. Spic. Zoo!, t. f. 4. Ch. Planiceps. Merrem. C. Bilohus. Kuhl. Occiput flat, rather wider behind, under edged with two flaps ; a white band on each side. Interior of Africa. Streaked-sided Chameleon. Chameleo Lateralis, Gray. Lead colour, sides white streaked ; occiput compressed, slightly keeled ; scales granular, with a series on the back. b. With a series of processes on throct, none on belly or tail. Panther Chameleon. C. Tigris. Kuhl. Gray. Spic. Scales minute, regular ; brown, with minute black specks. Cape Chameleon. Chameleo Pumillus. Daud. iv. t. 53. Ch. Margaritaceus. Mer. Seba, i. t. 32. f. 4, 5. Scales minute, larger on the sides ; olive varied. Var. With larger processes on the head. Ch. Pardalis, Cuv. C. Fimbriatus. Wied. Cape of Good Hope. Brookes Chameleon. Chameleo Brookesii, Gray. Spic. Zool. t. 3. Cham. Superciliaris^ Kuhl. Scales minute ; back with a series of processes on each side ; eyebrows produced into horns. Mus. Brit. 53 CLASS REPTILIA. c. Without any sjnnes on the chest, belly, or tail. Two Horned Chameleon. Cham. Bi/idus, Brongn. Daud. t. 54. Ch. Bifurcus, Kuhl. Scales square ; occip\it flat, dilated behind ; the sides with groups of white scales; male vvith two compressed horns over the nostrils ; female hornless. Isle of France. Hooded Chameleon. Cham. Cucullatus, Gray. Scales oval, unequal ; occiput compressed, flattened, with 2 flat processes on each side of its hinder edge, nose pro- duced. Madagascar. Mus. Brit. T%ree Horned Chameleon. Cham. Owenii, Gray. Scales square, small ; head short, with three long, conical, curved horns over the nostrils. 1^'ernando Po. Parson's Chameleon. Cham. Parsonii, Cuv. Fos. v. f. 30, 31. Phil. Trans, viii. t. 8. Scales ovate, equal ; occiput flat, truncated behind ; eye- brow crest, produced and elevated on each side the muzzle into a long irregular lobe. Mus. Bell., and Col. Surg. Gen. V. Agama. Teeth placed on the edge of the jaws, toes free, long, head and body depressed, covered with imbricate scales. Old World. A. Femoral pores, none. a. Head, lyrate, hack and tail crested. Lyriocephalus. Scutated Lizard. Lac. Scutata, Lin. Seba, 1, t. 109. Nose with two rounded tubercles, body with cross bands of larger scales, Mus. Fort. Pitt. Chatham. 54 CLASS REPTILIA. b. Head, lyrate, ears distinct, back and tail crested, Agama. — Gariocephalus, Boie. Agama Tigrina, Merrem.. Shaw, t. 68. Lophyrus gigas, Boie. Pale brown, with transverse spotted bands. Lophyrus Kuhlii, Boie, MS. Crest less elevated, back with five or six oblique white bands. c. Cytophanes. Cyrtophanus Cristatus, Boie. Jgama Cristata, Merrem. Seba, 1, t. 94, f. 4. Scales of body, smooth, of limbs and tail, larger and keeled. d. Back scales large, shelving upwards. Calotes, Boie. Common Calotes. Calotes Ophiomachus, Kaup. Lac. Calotes, Lin. Seba, 1, t. 93, f. 2. Blue, sides white banded, with two rows of compressed spines behind the ears, scales large, rounded, vertical on back. Indian Calotes. Calotes Tiedemani, Kaup. Isis. xx. t. 8. Young. Agama Versicolor, Daud. t. 44. Ag. JF7avigu- laris. Baud, and Agama Indica, Gray. Brown, varied with spots, with two or three groups of small conical spines over the ears. India. Smaller Calotes. Agama Minor, Gray, Zool, Jour. Tail short, back brown, with larger brown spots. e. Back scales, small, horizontal. Bronchocela, Kaup. Blue Calotes, Agama Cristatella, Kuhl. Seba, 1, t. 89, f. 1. Blue, not banded, nuchal crest, very smaU, low, scales of body, keeled, smaller than on tail and limbs. 55 CLASS REPTILIA. Long-legged Calotes. Agama rultuosay Harlan. Jour. Acad. Phil. iv. 1. 19. Agama Calotes^ Kuhl. Seba, 1, t. 89, f. 2. Calotes Gutturosa, Cuv. Guerin, Icon. t. 7> f- 3. Blue ; crest short, scales, all keeled. India. Le Geleote, Lacep. 1, t. 12, is perhaps this species. Agama Gutturosa, according to Merrem and Lichterstein, is an American species^ and is not this. Seba, 1, t. 89, f. 1, is an Iguana. Col. Gut- turosa, Mus. Berl. witli a blue neck, is white banded. KuhVs Calotes. Calotes Tympanistra, Kuhl. Blue ; crest, very small, scales of belly subequal, keeled. Mus. Berl. f. Acanthosaura. Armed Calotes. Agama Armata, Gray, Zool. Jour. When young, with very thin scales. Calotes Lepidogaster, Cuv. R. A. Tropidogaster. Mus. Paris. Head, with long cylindrical spines over eyes, a dorsal crest. g. Agama. Tubercular Agama. Agama Tuberculata, Gray Zool. Jour. Head moderate ; scales of back rather smaller than on limbs and tail ; of neck and nape with ridges of rather larger triangular scales ; under side of legs with short strong keeled scales. India. Mus. Brit. Obsoletely Crested Agama. Agama Dorsalis, Gray. Head large, dilated behi[id ; scales rather small, smooth ; nape, and back, and tail with very obscure crest of rather larger scales. India. Mus. Brit. Occipital Agama. Agama OccipitaliSy Gray. Head moderate ; scales of back broad, ovate, lanceolate, keeled, 5& CLASS REPTILIA. spinose, of head smootli and thin ; nape with a very obscuie crest, and bundle of short three-sided spines. Africa. Mus. Brit. Common Agama, Agama Spinosa. Lac. Agama, Lin. ? Brown ; head moderate ; scales of back large, smooth ; of limbs larger, keeled ; of belly moderate, nearly smooth ; nape with a slight crest ; back of head and sides of neck with blundle cf long subulate scales. Africa. Brit. Mus. Sitana. Cuv. Semiphorus. Wag. Pondichery Sitana. Agama Pondicerana, Nob. Body and limbs with keeled imbricate scales ; fulvous with two series of large rhombic brown spots. Male with very large pouch extending to between the front legs. Hence the genus Sitana f Cuvier, called Tropidosaura in Mus. Paris. b. Head rounded^ depressed ; ears distinct ; hack with hand of larger scales ; tail with whorled bands of large spinous scales. Stellio. Common Stellio. Lac. Stellio^ Lin. Stellio Vulgaris^ Daud. Olive spotted with black. Rup. Atlas, f. 2. c. Head ovate lyrate ; ears distant ; hack and tail not crested ; tail tapering, with imbricate scales. Trapelus. Cape Agama. Trapelus hispidus, Kaup. Iris. xx. t. 7- Agama Orbicularis, Merr. ? Seba, j. t. 83. f. 1, 2. Scales unequal, with trihedral spinous scales. Cape. Yellow-striped Agama. Ag. Ater, Daud. Ag. Suhspinosa, Gray, Ann. Phil. 1827. Trapelus Suhhispidus, Kaup. Brown, striped with a yellow dorsal line and red spot on each side ; scales small ; of occiput large, ovate, smooth. 67 . CLASS REPTIL][A. Mutable Agama. Ag. Ruder ata^ Oliv. Voy. t. 29, Trapelus Mutahilis, Cuv. T. ^gyptiacus, Geof. Rept. Egypt. t. 5. Ag. Orbicularis^ Daud. t. 45. Ag. Deserta, Licht. .'* Tail one-half as long again as the body ; scales of the head convex ; of the body unequal, irregular. Egypt. Mus. Brit. Trap. Savlgnii, Ardouin. ^avigny Rept. Egypt, f. 3 and 4, scarcely appears to differ. SuppePs Agama. Agama Sinaita, Ruppel. t. 3. Agama Straminea. Mus. Berl. Brownish grey, with paler spots ; dorsal scales unequal, slightly keeled, margined ; edge of ear one-spined ; a scaleless pit before the shoulder. Egypt. Perhaps same as former. Sand Agama. Agama Arenaria, Van Heyden. Yellowish grey, spotless ; dorsal scales equal, slightly keeled, not margined ; edge of ears one-spined ; but pit before the shoulder with scales. Egypt. Aral Agama. Ag. Aralensis, Licht. Lac. Sanguinolenta, Pall..? Body dirty straw colour ; reddish, spotted ; scales equal, semicircular, keeled, ending in a spine ; tail black ringed. Slender Agama. Agama Agilis, Oliver. Voy. Savigny Rept. Egypt, f. 5. Agama Isodactyli. Mus. Berl. Scales small, equal, nearly smooth ; tail long, slender, black banded ; legs, especially the hinder, long and slender. Egypt d. Head round depressed ; ears covered ; claws sharp ; bacJc and tail with irregular scales. Phrynocephalus. * Margin of lips produced ; toes fringed ; claws long. Eared Phrynocephale. Ph. Auritus, Kaup. Lac. Aurita, and Lac. Mystacea^ Pallas. Lac. Lobata. Shaw. Brown with a small lobe on each side the neck. 58 CLASS REPTILIA. ** Margin of lips simple, claws moderate. PaUa8''8 Phrynocephalc. P. Caudevolvula. Lac. Caude- volvula, Pallas. Lac. Guttata, Lepech. Reis, t. 22. Scales of body very minute, smooth ; tail long, smooth. Eyed Phrynocephalc. Ph. Ocellatus. Agama. Licht. With unequal sized black-eyed white spots. Ural Toad Lizard. P. Uralensis, Kaup. Lac. Uralensis, Lepech. Rees, t. 22. Lac. Helioscopea, Pallas? Scales of back unequal. Buchara. e. Head roundish ; throat three pouched ; sides ivith wing- like expansions supported by the ribs. Draco, Lin. Short'Pouched Dragon. Draco Abbreviata, Gray, ZooL Jour. Draco Fimbriatus, Kuhl ? Scales large ; thighs fringed behind ; throat pouches short, central reaching to the thorax. Wings spotted beneath. Banded Dragon. Draco 5 Fasciatus, Gray, Zool. Jour. Draco Viridis, and Draco Fuscus, Daud. t. 41 .'' Wings ash, with four continued blackish bands. Lined Dr^^ofi. Draco Linsctizis X)aud. Back ash ; wings brown, with numerous white lines ; scales of tail large, blunt, and uniform. Timor Dragon. Draco Timorensis, Kuhl. Middle dorsal scales larger, keeled. Brownish ; wings and body glaucous, ana brown marbled ; pouch black. Kuhl. Black Pouched Dragon. Draco Hcematopogon., Boie. Is peculiar for a black spot on each side of the throat pouch. B. Femoral Pores distinct. f. Head long ; eyes large ; tail round ; back and tail with irregular imbricate scales. Gemmatophora 59 CLASS REPTILIA. Bearded Gemmatophore. Gem. Barbata. Jgamaf Cuv. Back with cross bands of larger scales ; scales of throat, sides, and back of ears elongated, bristle pointed. New Holland, Mus. BelL and Col. Surgeons. Muricated Gemmatophore. G. Muricata, Lac. Muricata, Shaw. Zool. A. Grandoculis, Lac. and A. Jacksoniensis, Kuhl. Black brown, with a series of pale spots ; back with longitu- dinal series of elevated scales. New Holland. g. Head long, having a large pleated frill on each side of the neck behind the ears. Back and tail with irregular scales. Clamydosaurus. Frilled Lizard. Clamydosaurus Kingii, Gray, Kings. Voy. Pale brown, scales keeled, of back limbs and tail larger, of belly small, and of sides smallest. Frill with large keeled scales on both sides. New Holland. Mus. Brit. Mr, Frazer. h. Head squarish ; back aiid tail compressed, crested. Lophura. Amboina Lophura. Lophura Amboinensis. Lac. Javanica, Homsted. Lac. Lophura, Shaw, Zool. t. 62. Tail above compressed, fin-shaped. Cuvier'^s Lophura. Lophura Cuvieri, Gray, Mus. Paris. Brown green spotted ; body with four or five oblique, bands of blue-eyed spots ; scales of body and tail small subequal ; back and end of tail with a series of distant, short, compressed spines. Tail compressed, interrupted by distant rings, upper and lower edge two keeled. Cocliin China. Lesueurs Lophura. L. Lesueurii, Gray, Mus. Paris. Dark brown, varied with pale netted lines; scales of head conical, with scattered acute conical tubercles on the head and 60 CLASS REPTILIA. neck ; back with a crest of short compressed spines, forming a double crest about two-thirds the length of the back, sides with eight or nine cross bands of oval larger keeled scales, and others similar across the base of the tail and limbs. Paramatta, Lesueur. Beautiful Lophura. Lophura Concinna, Physignathus Concinnus, Cuv. R. A. t. f. Ph. Iguanoides» Mus. Paris. A crest of conical compressed scales the whole length of the back ; head with granular scales. Body and tail with small squarish scales, the scales of the tail becoming larger near the end ; tail much compressed ; young with scarcely any crest. Dark blue, with some oblique white bands on the side, and whitish beneath, with some rather larger compressed scales on the side of the chin. i. Head short, arched ; hack, with minute scales, not crested; tail with whorled scales. Uromastyx. * Scales of tail large, spinose, Uromastyx. Cuv. Mas- tigura. Flern. Common Uromastyiv. Uromustyx Spinipes, Merrem. U. Acanthinurus, Bell. Zool. Jour. Stellio Spinipes, Daud. Geoff. Egypt, t. 2. Olive dull greenish brown, subcaudal segment, with subden- tate scales, placed in two or three series. North Africa. Two Coloured Uromastyx. Uromastyx Dispar. Tail like the former, male, black brown ; female, ash yellow. Ornamented Uromastyx. Uromastyx Ocellatus, Licht. Uromastyx Ornatus, Heyden, Ruppel, Trav. Dull green, body brown, ringed subcaudal segment consists of a single series of armless scales. Africa. Dongola. 61 CLASS REPTILIA. Black Uromaatyx. Uromastyx Niger , Merrem. Stellio Niger, Daud. Tail twice as long as the body, with twenty-seven rings of spines ; toes long, sub-depressed ; scales small, rhombic. Hardwiclcs Uromastyx. Uromastyx Hardwickii, Gray, Zool. Jour. U. Reticulatus, Cuv. R.A. Greenish, marbled with black dots; a large black spot in front of each thigh. Hindostan. •Cuvier indicates Uromastyx Grisseus^ from New Holland, ** Tail with rings of small armless spines. Lecolepis, Cuv. Cynosaurttf Schegel. BelVs Uromastyx. Uromastyx Bellii, Gray, Zool. Jour. Lecolepis Guttatus, Cuv. Guerin. Icon, t. 7* ^- Giittato Lineatus, Mus. Paris. Cyn. Punctatus, Schegel. Mus. Leyd. Olive ; back, with three lines alternating with black edged white spots ; limbs white-eyed ; sides black spotted. Reeves Uromastyx. Uromastyx Revesii, Gray, Mus. Brit. Olive, with a series of bright red spots down each side. Spotted Uromastyx. Uromastyx Maculatus, Gray. Leco- lepis Maculatus, Cuv. Mus. Par. Pale brown *; head, with a black streak from the eye to the neck ; back, legs and tail with six rows of oblong black spots, sddes of the legs black netted. • Order II. Ophiosauri. Mouth not dilatable, skin covered with regular equal scales. Section I. Body with equal similar scales, above afid below, and a compressed line of small scales on each side ; tongue short, contractile, two cut. Ptygopleura. 62 CLASS REPTILIA. Gen. I. ZoNURus. Teeth placed on the side of the jaws ; legs four, moderate ; ears, exposed ; vent medial. 1. Toes 5, 5; femoral pores distinct; tail with spinose whorled scales. Africa. Zonurus. Common Zonurus. Lac. Cordylus, Linn. Cordylus Gris- seus, Seba, i. t. 48. f. 4. Brown with a yellow line down the back ; the scales nearly equal. Cor. Niger, Cuv., is from a badly preserved speci- men, and Cor. Dorsalis, from a good coloured specimen. Cape. Armed Zonurus. Zonurus Cafaphractus. Bonn. Trans. Head with large scales ; scales of the body large and hard, of the sides three toothed; of the thighs, neck, and tail, ending in a trigonal spine. . \ - Small scaled Zonurus. Zonurus Microlepidotus. Gray. Dorsal scales about half the size of ventral, bluntly keeled. 2. Toes 5, 5, femoral pores distinct ; tail unarmed. Cicigna, Gray, 1815. Gerrhosaurus, Wiegmann. Common Cicigna. Cicigna Sepiformis. Scincus, Merrem. Lac. SepSy Lin. Gerrhosaurus Flavigularis, Weigmann. Olive brown, beneath white, chin^ throat, and upper lateral scales, yellow ; fore, middle, and hinder toes longest. Smooth Cicigna. Cordylus LcBvigatus, Cuv. Brown, with four black and yellow lines on each side the back, and two series of black and yellow spots ; scales obliquely four sided, keeled. Perhaps the same as former. 63 CLASS REPTILIA. Madagascar Cicigna. Cicigna Madagascariensis. Gray. Green, with yellow lines on each side the back ; back and sides brown spotted ; scales smooth ; when young, scales keeled ; variety. /S Ornala. Back with five yellow and six black lines, and sides black, yellow spotted. Madagascar. Mus. Brit. C. Toes 5, 5 ; femoral pores y none ; tail with whorled, unarmed scales. America. Gerrhonotus, Wiedman. Burnet s Gerrhonote. Gerrhonotus Burneitii, Gray. Scales of back, and sides of body and tail, obliquely four sided, slightly keeled ; dark brown ; sides, with dark band and cross rows of white spots beneath. Depp's Gerrhonote. Gerr. Deppii, Wiegm. Isis. xxi. Dorsal scales four angular, smooth ; olive black, irregularly white spotted, beneath white ; tail round, white ringed. Mexico. Retired Gerrhonote. Gerrho7iotus Taniatus. Wiegm. Dorsal scales four angular, smooth ; bluish, with black angular cross bands ; tail black, ringed. Blue Gerrhonote. Gerrhonotus Cceruleus, Wiegm. Dorsal scales, four angular ; olive bluish, with three series of black spots ; tail round, hemeolate. Brazils. Rough-necked Gerrhonote. Gerrhonotus Rudicollis, Wiegm. Head rough, with elevated shields ; scales four, angular ; placed in cross series. Grey green, base of tail, four angular. Imbricate Gerrhonote. Gerrhonotus Imbricatus, Wiegm. Head shields elevated ; dorsal scales keeled, four angular, olive grey, tail, hemiolate. Mexico. Brit. Mus. 64 CLASS REPTILIA. Smooth-headed Gerrhenote. Gerr. Leiocephalus, Weigm. Head smooth, scales four angular, in cross series, of middle of back keeled, of nape and sides smooth; grey green, bluish beneath, with nine longitudinal lines. Mexico. Toes 4, 4, femoral pores — Sauroiphis Fitz. Tetradactylus, Merrem. New Holland Saurophis. Saurophis Lacepedii, Lac. Tetradactylus, Lacep. Ann. Mus. ij. t. 59. f. 2. Tetradac- tylus ChalcidiceSf Merrem. Gen. II. Ophtsaurus. Teeth on the side of the jaw ; legs rudimentary ; ears dis- tinct ; lateral line distinct ; vent medial. a. Hinder extremities only rudimentary, on the side of the vent, undivided. Pseudopus, Merrem. Pallas* s Scheltopusik. Pseu. Serpentinus, Merrem. Ps. Pal- lasii, Cuy. Lac. apoda, Pall. Nov. Com. xix. t. 9. Scales smooth ; caudal scales square ; front feet rudi- mentary, length two feet. Russia. Durville's Pseudopus. Pseutopus Durvillii, Cuv. Brown ; dorsal and caudal scales keeled, rough. Brit. Mus. 6. Legs none. Ophisaurus, Daud. Hyalinus, Merrem. Common Glass Snake. O. Ventralis, Daud. Anguis, Linn. Yellow green, black spotted. Sometimes the spots form con- tinued lines. Oph. Striatalus and Oph. Punctatus, Cuv. MSS. differ very little, if at all, from this species. Gen. III. Chalides. Teeth on the side of the jaws .'' Legs four, distinct ; ears hid under the skin ; vent medial, linear. a. Toes 5, 5. Chalcides, Fitz. Common Chalcides. Ferruginous with six dorsal lines. F 65 CLASS REPTILIA. b. Toes 4f, 5 ; femoral pores distinct. Heterodactylus. Spixs Heterodactyle. Het. Imbricatu^f Spix, Braz. t. 27. Olive brown ; sides of body and tail yellow-lined ; tail long ; central dorsal scales acutely keeled. Brazils. c. Toes 4, 4. Brachypus, Fitzinger. Common Brachypus. Bra. Abdonmialis, Thunb. Brown, with stripes on the belly. d. Toes very smalLrudimentary, 5 before, 3 behind. Chalchis and ColobuSf Merrem. Cophias, Fitz. Annulated Chalchides, Shaw. Cophias Flavescens, Gruy. Le Challide, hacep. t. 82. Chamoesaura Cophias, Schn. — Chalchide Menodactylus, Daud. Chalchydes Flavescens, Bonnat. Chalchide Tridactylus, Daud. Colobus Daudini, Merrem. Guiana. Gen. IV. Amphisb