23. HEMIDACTTLUS. 125 



chin-shields, in contact behind the mental. Upper surface of 

 body covered with small granules intermixed with small round 

 convex tubercles, forming about twenty more or less regular longi- 

 tudinal series. Abdominal scales rather small, cycloid, imbricate. 

 Males with a long series of femoral pores, interrupted in the middle, 

 composed of eighteen to twenty pores on each side. Tail cylindrical, 

 tapering, covered above with very small, uniform, smooth, imbri- 

 cate scales, inferiorly with a median series of large transverse plates. 

 Pale chocolate-brown above ; a large U-shaped band from the eyes 

 across the nape, two other cross bars on the back and one on the 

 base of the tail, and complete broad rings roimd the tail, dark brown, 

 light-edged ; lower surfaces dirty white. 



Total length 172 millim. 



Head 21 



Width of head 17 



Body 59 



Fore limb 26 



Hind limb 32 



Tail 92 



"West Africa. 



10. Hemidactylus bocagii. 



Hemidactylus longicephalus, Bocage, Jorn. Sc. Lish. iv. 1873, p. 210, 

 longiceps, {non Cope) O'Shaughn. Zool. Mec. x. p, 89. 



Head elongate oviform ; snout much longer than the distance 

 between the eye and the ear-opening, about once and two fifths the 

 diameter of the orbit ; forehead feebly concave ; ear-opening suboval 

 or subtriangular, about one third the diameter of the eye. Body 

 rather elongate ; limbs moderate. Digits moderate, free, inner well 

 developed; five or six lamellae under the inner digits, seven or 

 eight under the fourth finger, and eight to ten under the fourth toe. 

 Snout covered with large keeled granules ; hinder part of head with 

 minute granules intermixed with small tubercles. Eostral four- 

 sided, nearly twice as broad as high, with median cleft above ; 

 nostril pierced between the rostral and three or four nasals, the 

 rostral rarely entering the nostril ; nine or ten upper and eight or 

 nine lower labials; mental large, triangular; two pairs of chin- 

 shields, median largest and in contact behind the point of the mental. 

 Upper surface of body covered with minute granules intermixed 

 with small trihedral, strongly keeled tubercles arranged in fourteen 

 to eighteen irregular longitudinal series. Abdominal scales small, 

 cycloid imbricate. Males with four to eight prseanal pores, and a 



