276 Mr. Gray on the Slender-tongued 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. . . . Passebbs. 



Ophidians (Carnivorous) Fer;g Accititres. 



EjfYDOBAURIANS . (Aquatic) Cete Axseres. 



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



Amphisbenians . ( ?) Glires Grall^e. 



Slender-tongued lizards. (Saurte Leptoglosscc.) 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 w r alking ; 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; throat 



scaly. 

 Fam. I. Teidjs. 

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

 throat with scales. Confined to the New "World. 



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

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

 tivo large nasal plates. 



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



equal. 



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

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

 der very blunt." 



Teius Teguixin, Variegated Lizard, Shaw, Zool. t. 73. Lacerta 

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

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



South America. 



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

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

 Teius." Wagler. 



