276 Mr. Gray on the Slender -tongue d Saurians. 



closed between two shields formed of square plates ; penis simple ; 

 legs 4 ; jaws toothed. 



These orders appear to be analogous to the following Orders of 

 Mammalia and Birds. 



Reptiles. Mammalia. Birds. 



Saurians (Climbers) Primates .... Passeres. 



Ophidians ; (Carnivorous) Fer^e Accipitres. 



Emydosaurians . (Aquatic) Cete Anseres. 



Chelonians (Large-hoofed) Ungulata. . . . Galling. 



Amphisbenians . ( ?) Glires GrALLjE. 



Slender-tongued lizards. (Saurce Leptoglossa.) Tongue elongate, 

 more or less slender, with the apex forked or bifid ; eyes diurnal, 

 generally provided with two connivent valvular eyelids; pupil round; 

 body subcylindrical ; the feet formed for walking ; toes unequal, the 

 outer hinder one being lower down and rather opposable to the rest. 



Section I. Tongue contractile; head with regular normal shields ; 

 scales four-sided or lozenge -shaped, placed in rings. 



Subsection 1 . Sides covered with small granular scales ; scales and 

 shields in transverse and longitudinal series. 



* Sides rounded ; head pyramidical ; femoral pores distinct j throat 



scaly* 

 Fam. I. Teid^e. 

 Head pyramidical; supra-orbital plates horny; collar double; 

 throat with scales. Confined to the New World. 



* Throat with two cross folds ; the scales in the middle between them 

 6 • sided ; abdominal shields smooth ; tail rounded ; nostrils between 

 two large nasal plates. 



a. Abdominal shields small, longer than broad ■ dorsal scales small, 



equal. 



Teius, Merrem. Podimema, Wagler. Monitor, Fitz. Toes 5 — 5; 

 tail round ; "teeth on the edge of the jaw ; front ones conical, hin- 

 der very blunt." 



T'eius Teguixin, Variegated Lizard, Shaw, Zool. t. 73. Lacerta 

 Teguixin, Linn. Tupenambis Monitor, Baud. — Spix, t. 19. Teius 

 nitor, Merrem. Seba, t. 96. f. 23. P. Max. t. from life. 



South America. 



Ctenodon, Wagler. "Tail round; toes 5 — 5; teeth on the inner 

 side of the jaws ; front pectinately lobed, hinder 3-lobed, rest like 

 Teius." Wagler. 



