COMPEXDIVM OF GENERIC I'lsTIM Tlo.XS. 



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Genus. Cha.m.esai'ka. — Feet undivided, like tins. Hark with 

 six series of broad scales. Africa. 



Tribe. GEISSOSAURA — Scales of belly rounded, overlap- 

 ping, and covered with thin epidermis. .Sides rounded, scaled 

 like the back. Tongue short, flat, narrow, slightly nicked at 

 the end. Head with regular many-sided shields, neck nearly 

 as wide as head. 



Family. GYMNOPHTHALMIDiE. - Eyelids rudimentary. 



Teeth of jaws conical, none on palate. Limits four, weak. No 

 pores on thigh. 



Genus. Crytoblepharcr. — Head conical, -scales smooth. 

 Five toes on each foot. Ears exposed. Australia. 



Family. PYGOPID.E.— Pupil of eye round or oblong. Shields 

 of abdomen six-sided, in two or three series. A central series of 

 larger shields on the tail. Fore limbs wanting, hinder pair very 

 feeble. 



Genus. Pygopus. — Scales of back keeled. Pores before vent 

 numerous. Hinder limbs rather long. Pupil of eye circular. 

 Australia. 



Genus. Delma. — Scales smooth. No pores before vent. Pu- 

 pil oval and erect. Hind limbs short. Australia. 



Family. APBA.SIAD.ffi. — Nostrils between two shields. Limbs 

 wanting. Scales above and below nearly similar. Pores none. 



Genus. Aphasias. — Same characteristics. Australia. 



Family. LIALISIDiE.— Head shields slightly overlapping ; 

 cheeks scaly. Nostrils in little scale on ridge of face. Fore 

 limbs wanting; hinder undivided, short, flat, and scaly. Tail 

 long. Series of pores before vent. 



Genus. Lialis. — Same characteristics. Australia. 



Family. SCINCIDffi.— Head conical. Eyelids distinct, and 

 capable of closing over eye. Nostrils in a shield on nose. Limbs 

 four, sometimes hidden under skin. No pores on thigh. 



Genus. Scixcus. — Scales thin, smooth. Rostral plate keeled 

 in front. Tail round, tapering, without spines. Body spindle- 

 shaped, and flat below. Toes five on each foot, flat, and fringed 

 on sides. North Africa. 



Genus. PlkstioDON. — Lower eyelid scaly. Limbs strong. 

 Body spindle-shaped and tail tapering. Scales large. Palate 

 toothed. Africa, America, and Asia. 



Genus. Mahouya. — Lower eyelid transparent. Rest as in 

 Plestiodon. West Indies and Asia. 



Genus. Anguis. — Body and tail cylindrical, and very long. 

 No external limbs. Head conical and blunt. Teeth rather long 

 and sharp. Lower eyelid scaly and opaque. Europe, Asia, and 

 Africa. 



Genus. Tribolonotus. — Scales thick and wrinkled, those of 

 back strong and spine-like. Body spindle-shaped. Head flat 

 and plated, armed with spines behind. Lower eyelid scaly. 

 Limbs four, and strong; toes five on each foot. No pores on 

 thio-h. Tail compressed, with five spiny keels above. New- 

 Guinea. 



Genus. CeLBSTDS.— Body spindle-shaped; tail round, taper- 

 ing, not keeled above. Scales grooved. Head flattened. Five 

 toes on each foot, the claws small and sharp. West Indies. 



Genus. Diploglossus. — Body and tail cylindrical and elon- 

 gated. Best as in preceding genus. Tropical America. 



Family. OPHIOMORIDiE.— Head shielded, rostral shield tri- 

 angular and erect. Palate without teeth. Tongue flat, scaly, 

 and with a shallow nick. Ears hidden under skin. Body and 

 tail long and cylindrical; limbs none. Scaly, smooth, six-sided. 



Genus. Ophiomorus. — Only genus. Northern Africa. 



Family. SEFSLDJE. — Rostral plate square. Palate toothless, 

 and with a longitudinal groove. Limbs four or two, weak. 



Genus. Sph.kxops. — Rostral jdate long and notched. Head 

 wedge-shaped; lower eyelid transparent. Legs four. North- 

 ern Africa. 



Genus. Sepr. — Rostral plate rounded. Head pyramidal. Body 

 long and cylindrical. Lower eyelid with transparent disc. 

 Limbs four; toes three on each foot. Europe and Northern 

 Africa. 



Genus. GoxGYi.rs. — Body somewhat spindle-shaped. Limbs 

 four; toes five on each foot. Shores of Mediterranean. 



Family. ACONTIADJE.— Head small ami shielded; upper 

 eyelid very small. Tongue scaly. No pores on thigh. Ears 

 minute. 



Genus. AcoxTrvs. — Limbs none. Southern Africa. 



Family . TYPHLINID^.— Rostral shield large and cup-shaped. 

 Body and tail cylindrical. Eyes and ears hidden under skin. 



Genus. Typhline. — Limbs none. Ventral shield large and 

 single. Southern Africa. 



Family. TYPHLOFSID.E.— Head flat, broad, rounded in front; 

 rostral plate large, oblong, and erect. Mouth semilunar, under 

 the muzzle. Eyes under scales or wanting. Body cylindrical. 

 Tail cylindrical, suddenly contracted, and obliquely convex 

 at tip. 



Genus. Typhi. ops. — Rostral plate very large, turned down in 

 front. Tail short. Asia. 



Genus. ONYCHOPHIS. — Rostral shield moderate: oblong. Asia, 

 Africa, Australia, and the Philippines. 



Genus. AltGYROPHIS. — Head flat, rounded; central shield ob- 

 long, arched, and erect. Eves distinct. Asia and Tropical 

 America. 



Sub-order. PACHYGLOSSvE.— Tongue thick and convex, 

 slightly nicked at end. 



Tribe. NTCTISAURA, — Scales of back and sides granular; 

 of abdomen, small and overlapping. Eyes nocturnal, lids circu- 

 lar. Body rather flat. Limbs strong. 



Family. GECKOTIDiE.- ( >nly family. 



Genus. PytodaCTYLUS. — Toes slender, dilated at tips, with 

 two diverging series of plates beneath, not webbed. Body sim- 

 ple and tail round. Northern Africa. 



Genus. Gecko. — Tens dilated throughout, with a series of 

 transverse membranous plates beneath, last joint short, not 

 webbed. Back with tubercles. 



Genus. Thecodactylus. — Toes dilated, last joint short, bent 

 under and hidden in notch; two series of transverse plates be- 

 neath, half webbed. Tail granular. Tropical America. 



Genus. Ptychozoox. — Head, body, and tail fringed with 

 deeply-scooped membrane on each side. Toes webbed. Java. 



Genus. Tarextoea. — Toes dilated, with single series of plates 

 | beneath two claws on each foot. Rostral shield very long, 

 j Europe, Africa, America, and West Indian Islands. 



Genus. Sph.erodactylus. — Toes slender, with single round 

 disc at end. Claws none. Rest like Tarentola. America. 



Genus. Phyllirus.— Toes clawed, rather dilated at base, 

 long, slender, and joints bent at angle. Tail very flat, tapering, 

 and rounded at tip. New Holland. 



Tribe. STROMLOSAURA.—KQ. scales overlapping. Eyes 

 1 diurnal, lids valvular, pupils round. 



Family. IGTJANID^.— Teeth round at root, but leaf-like and 

 toothed on edge, set on inner side of jaws; young teeth growing 

 at base of others and pushing them forward. 



Genus. Poi.YCHRUS.— Body compressed, and covered with 

 little squared scales arranged in rings. Pores on thigh. Toes 



