Mr. Gray on the Slender-tongued Saurians* 391 



on the sides tipped with white ; scales of the back slightly keeled, 

 of the sides smooth ; on the back 16, on the belly 12- rowed. 



Hab. ? Brit. Mus. 



Elgaria multicarinata. Gerrhonotus multicarinata, DeBlainv. Nov. 

 Ann. Mus. 1838, t. 28. f. 2. appears to be a second species of this 

 genus if it is not a specimen which has the tail reproduced. In the 

 figure the occipital plates are represented much more distinct than 

 in our specimen. 



C. Snake-like ; legs 2, rudimentary or none ; femoral pores none ; 

 ears exposed. 



Pseudopus, Merrem. Legs 2, posterior, rudimentary, undivided. 

 Old World. 



Pseudopus Pallasii, Cuv. R. A. ii. p. 69. Lacerta apoda, Pallas. 

 Ophisaurus serpentinus, Eichw. Bipes Pallasii, Wagler. Pseud, ser- 

 pentina, Merrem. 



Young ? Pseudopus Durvillii, Cuv. Guerin Icon. t. 17. f. 1. Apodal 

 Lizards, Shaw Zool. t. 



Europe. 



Ophisaurus, Daud. Legs none ; tail long. New World. 



Ophisaurus ventralis. Anguis ventralis, Linn. 



North America. 



Ophisaurus lineatus. Yellowish brown with a set of three black 

 and yellow streaks above the lateral line ; belly bluish; top of the 

 head and sides of the neck brown, spotted. 



North America. Mus. Col. Surgeons. 



Fam IV. Cercosaurioe. 



The body subcylindrical, sides rounder with scales like the back ; 

 back and upper part of the tail with rings of large keeled scales 

 forming longitudinal series ; throat, belly, and tail beneath, with flat 

 square shields. 



Cercosaura, Wagler. Scales of the back large, oblong, quadrate, 

 compressed, keeled ; throat with a double series of imbricate shields ; 

 collar rather distinct ; tail roundish, compressed. Toes 5 — 5 ; ears 

 conspicuous ; upper eyelid small ; supraorbital plate thin ; femoral 

 pores none. 



Cercosaura ocellata, Wagler Amph. Syst. 158. 



Hab. ? 



Cercosaura tichreibersii, Wiegman. Tachydromus Schreibersii, 

 Fitz. Cat. 



Brazil. 



Fam. V. Chirocolid^e. 



Back and the tail above and below covered with long uniform 



