170 REPTILES. 



brilliant blue or green; dorsal scales rather large, cari- 

 nated; tail slender; L. 7. U. S., in pine forests, etc.; 

 abundant southward; varies greatly in color. 



2. /W?M0S0df4, Wiegmann. HORNED TOADS. 

 1. P. douglasi, Bell. HORNED TOAD. TEGUEXIN. No 

 row of large spines along sides of belly; ventral scales 

 smooth. Central and Western parts of U. S. south- 

 westward occurs P. cornutum (Harlan) Gray, with a row 

 of stout lateral spines, and carinated ventral plates. 



FAMILY LXXIL ANGUID^E. 



(The Glass Snakes.) 



Limbs rudimentary, hidden under the skin; body, 

 therefore, snake-like in form, but the general aspect 

 lizard-like. Through ignorance of the boundaries of 

 this family, I am unable to characterize it. 



/. OPHEOSAURUS, Daudin. GLASS SNAKES. 



1. 0. ventralis, (L.) Daud. GLASS SNAKE. Body 

 serpentiform; a conspicuous lateral fold; no external 

 limbs; tail very brittle, as in most lizards; dusky and yel- 

 low with narrow black streaks. Tenn. to Kansas and S. 



FAMILY LXXIIL TEIDJ3. 



(The Teguexins.) 



New World Lizards; head pyramidal, with regular 

 many-sided shields; scales of back granular or carinated; 

 throat scaly, usually with a double collar. Warmer 

 parts of America; genera 12; species about 40. 



/. CNEMIDOPHORUS, Wiegmann. TARAGUIRAS. 

 1. C. sex/ineatus, (L.) D. & B. SIX-LINED LIZARD. 

 Olive, with 3 or 4 yellow streaks on each side; abdomen 



