12. PiJISTTTETTS. 55 



4. Pristurus cmcifer. 



Gymnodactylus crucifer, Val. C. S. Ac. Paris, lii. 1861, p. 433 ; 



Vaill. Miss. MSvoil aux Pays Somalis, JRept. p. 17, pi. iii. flg. 1. 

 Pristurus longipes, Peters, Mon. Berl. Ac. 1871, p. 666. 



Head short and high; snout subacuminate, longer than the 

 distance between the eye and the ear-opening, once and one third 

 the diameter of the orbit ; forehead not concave ; ear-opening small, 

 oval, oblique, not one third the diameter of the orbit. Limbs very 

 long, the hind limb when stretched forwards reaching to between 

 the ear-opening and the eye ; digits very long and slender, with 

 extremely long claws. Snout covered with flat polygonal scales ; 

 upper parts of body and limbs with much smaller flat granides ; 

 abdominal scales flat, hexagonal, subimbricate, a little larger than 

 the scales on the snout. Eostral large, subpentagonal, with 

 truncate posterior angle, more than twice as broad as high, with 

 median cleft above ; nostril separated from the rostral and labials, 

 pierced between three rather swollen nasals; six upper and five 

 lower labials ; mental very large, truncate posteriorly ; no chin- 

 shields. Tail feebly compressed, not keeled (?). Gtrey-brown above, 

 with darker markings and white spots ; a white vertebral band ; 

 on each side a series of almost confluent white ?pots ; white infe- 

 riorly, throat with a few grey spots.. 



Total length 61 nuUim. 



Head 8 



Width of head 5 



Body 24 



Fore limb 16 



Hind Umb 24 



Tail 29 



Arabian GuH. 



(J, p . Kursi, near Aden. Marquis G. Doria [P.]. 



(One of the types of Pristurus longipes.) 



5. Pristurus coUaris. 



Spatalura collaris, Stdndachn. Novara, Rept. p. 20. 



Closely allied to P. carteri, from which it differs in having the 

 tail longer, as long as or a little longer than the body, and the upper 

 caudal crest ex:tending on the back. A deep black band across the 

 throat, extendiug on the sides of the neck. 



Habitat unknown. 



6. Pristurus carteri. 



h-ay, Proc. Zool. Soc. 18f 

 ,64, p. 185. 



Head short and very high; snout triangular, acutely pointed, 



Spatalura carteri, Gray, Proc. Zool. Soc. 1868, p. 286, pi. xx. fig. 2 ; 

 CarUr, op. cit. 1864, p. 185. 



