126 



DTSCOGLORSIDiE. 



Vomerine teeth in a long, 



straight 



or sHghtly 



curved series, narrowly interrupted in the middle, 

 behind the choan^, and extending outwards to the 



Fia. 48. 



vertical of their outer borders or even 

 a little beyond. Tongue moderately 

 large, circular, thick, adherent, scarcely 

 free behind. 



Head much depressed, a little broader 

 than long ; snout rounded or obtusely 

 pointed, projecting considerably be- 

 yond the mouth, as long as or a little 

 Open mouth. iQ^gg^, ^^^^^ ^l_jg diameter of the orbit ; 



no canthus rostralis ; dorsal region slightly grooved ; 

 nostril a little nearer the tip of the snout than the 

 eye ; eye moderate ; interorbital space as broad as or 

 a little narrower than the upper eyelid, and equal to 

 the distance between the nostrils; tympanum measur- 

 ing three-fifths to two-thirds the diameter of tlie eye, 

 sometimes feebly distinct, often completely hidden. 



Fig. 49. 



A 



Heads of males, upper view.?. A. Corunna. B. Oran. 



n. Sardinia. 



Tlemsen. 



