34 



any valid reason for its retention as a distinct genus. It may, 

 however, be used to indicate the subdivision of Uromastix in 

 which pores are absent, represented by the two species U. prin- 

 ceps, O'Sh., and U. henti, Anders. Uromastix hatilUferus, VailL, 

 from its dentition and the form of its body, is unquestionably a 

 member of the genus Agama, but with the tail of an Uromastix. 



Varanus griseus, Daud. 

 1 ?. 



Lacertid^. 



ACANTHODACTYLrS BOSKIANUS, Daud. 



16 d, 20 ?, and 3 juv. 



The scales round the bodies of these specimens vary from 35 

 to 48. The latter number leads into the type of fine lepidosis so 

 characteristic of this species along the seaboard of Lower Egypt, 

 where the scales range from 46 to 57. The accompanying table 

 (pp. 35-37) contains the measurements of the largest specimens 

 of this species yet recorded. I have tabulated the measure- 

 ments of 199 specimens from a great number of widely separated 

 localities, but not one attains to the dimensions of the largest 

 Hadramut individual. 



The coloration of some of them is somewhat different from 

 that found in other localities, as the upper surface of a few of the 

 adults is lineaied with bluish-grey and reddish-fawn. 



ACANTHODACTTLTTS CANTORIS, GrUnther. 



Acanthodactylus cantoris, Giinther, Eept. Erit. Ind. 1864, 

 p. 73 ; Anderson, Proc. Zool. Soc. 1895, p. 646. 



5 S and 9 $ . 



Snout elongate and acutely pointed, more so in some than in 

 others. The frontonasals may form either a long or short 

 suture, depending on the degree of elongation of the snout which 

 also affects the length of the prfefrontals ; four supraorbitals, the 

 fourth generally consisting of one elongated piece with granules 

 in front of it, but occasionally quite entire ; temporals elongate, 

 and generally keeled ; anterior border of the ear with an outer 

 row of enlarged scales, resembling truncated denticles, and an 

 inner row as well, but the latter is occasionally feebly defined. 

 The back, behind the shoulders, is covered ^\ith enlarged, imbricate, 



