538 COLLEGE ZOOLOGY 



Family 7. Teiid^e. — New-world Lizards. — Sauria with 

 tongue long and bifid, with scale-like papillae; limbs 

 normal or reduced. Examples: Atneiva, Cnemido- 

 phorus. 



Family 8. Amphisb^enid^;. — Worm Lizards. — Vermi- 

 form Sauria with short tail; limbs absent (except in 

 Chirotes); girdles reduced; eyes and ears concealed; 

 skin divided into regular rings. Examples: Amphis- 

 bcBna, Monopeltis, Lepidostemon. 



Family 9. Lacertid^e. — Typical Old-world Lizards. — ■ 

 Sauria with well-developed, pentadactyl limbs, with 

 sharp claws; tail long, brittle; tongue long, bifid, 

 with papillae or folds. Examples: Lacerta, Acantho- 

 dactylus, Eremias. 



Family 10. ScinciDjE. — Skinks. — Sauria with tongue 

 scaly, and only slightly nicked; limbs may be reduced 

 or absent ; strongly developed bony plates on head and 

 body. Examples: Mabuia, Lygosoma, Eumeces. 

 Suborder 3. Serpentes (Ophidia). — Snakes. — Elongated 

 Squamata without limbs; anal opening transverse; 

 copulatory organs paired; without movable eyelids, 

 tympanic cavity, urinary bladder and pectoral arch; 

 rami of lower jaw connected by ligament. (Four of 

 the nine families and several of the subfamilies are not 

 included in the following list.) 



Family 1. Typhlopid^e. — Burrowing Snakes. — Ser- 

 pentes with reduced eyes covered by scales; without 

 teeth in lower jaw; pelvis represented by vestiges. 

 Examples: Typhlops, Helminthophis. 



Family 2. Glauconiid^:. — Burrowing Snakes. — Ser- 

 pentes resembling the Typhlopid^e ; lower jaw toothed ; 

 vestiges of pelvis and hind limbs. Examples: Glau- 

 coma, Anomalepis. 



Family 3. Boid,e. — Pythons and Boas. — Serpentes 

 usually large, with vestiges of pelvis and hind limbs; 



