388 Mr. Gray on the Slender-tongued Saurians. 



XLIII. — Catalogue of the Slender-tongued Saurians, with De- 

 scriptions of many new Genera and Species. By John 

 Edward Gray, Esq., F.R.S., Senior Assistant in the 

 Zoological Department of the British Museum, &c. 

 [Continued from p. 283.] 

 ** Sides with a narrow impressed line; back, belly, and tail covered 

 with cross bands of 4-sided shields ; throat shielded. 



Fam. III. ZonuridjE. 



A. Lizard-like ; ears exposed ; legs 4 ; femoral pores distinct. Old 

 World. 



Zonurus. Head depressed, broad behind; supraorbital plate ex- 

 panded. Tail depressed, with whorls of large square keeled spinose 

 scales ; back with keeled subspinose, belly with smooth scales. Toes 

 5—5. 



* Back and sides covered with large, rhombic, obliquely -keeled, 

 dagger-pointed scales ; lateral line narrow. 



a. Dorsal scales spinose. 



Zonurus Nova- Guinea, Schlegel, 1. c, t. 7. f. 2. 



New Guinea. 



b. Dorsal scales all keeled. 



Zonurus cataphractus. Reddish ; middle of the back varied with 

 olive ; scales of neck ovate, keeled, spreading ; temporal shields 

 keeled, subpyramidical. Tail spinose. 



Cape of Good Hope. 



Zonurus cordylus. Pale brown, darker spotted ; dorsal and lateral 

 scales in sixteen series ; tail slender, elongate. 



Cape of Good Hope. 



c. The central dorsal series of scales flat, smooth. 



Zonurus vertebralis. Pale brown ; lateral and neck scales keeled, 

 dagger-pointed. 



Cape of Good Hope. 

 * Back covered with large keeled scales, with a vertebral series of 

 small scales ; sides covered with small and rather larger, scattered scales. 



Zonurus Davyi. Black ? Temporal scales large, smooth, many- 

 sided ; three pairs of prseanal plates, hinder largest. 



Cape of Good Hope. 



*** Back and sides with small scales having series of larger convex 

 slightly keeled scales on the sides of the back and upper parts of the 

 sides. 



