Eremias. 257 



and largely borders the mouth. A very loug aud narrow upper 

 temporal, followed by a much shorter shield ; temporal scales minute 

 and granular above, large and hexagonal beneath ; a narrow 

 tympanic shield ; no auricular denticulation. Lower eyelid scaly, 

 opaque, 



6 pairs of chin-shields, the three anterior in contact in the middle > 

 19 gular scales in a straight line between the symphysis of the chin- 

 shields and the collar; no gular fold. Collar distinct only on the 

 sides. 



Scales granular, oval, smooth, 60 across the middle of the body. 

 Ventral plates broader than long, except the outer, in 10 straight 

 longitudinal and 26 transverse series. Two large preanal plates, one 

 in front of the other. 



Scales on upper surface of tibia granular, not larger than dorsals ; 

 one series of large and two of small plates on the lower surface. 21 

 femoral pores on each side. Subdigital lamellae tricarinate, 18 under 

 the fourth toe. 



Upper caudal scales rounded behind, strongly keeled, lower feebly 

 keeled ; 22 scales in the fourth whorl. 



Head pale brownish above ; body black with 6 dorsal white streaks 

 on the nape and 6 on the body, the dorsolateral proceeding from the 

 superciliary edge ; a white lateral streak from below the eye to the 

 anterior side of the thigh, bordering the tympanum above ; limbs 

 black above, with round white spots ; tail with dark and light streaks, 

 the former 4 in number at the base, 3 further back. Lower parts 

 white. 



Measurements (in millimetres) : 



From end of snout to vent . . . .24 



„ ,, „ fore limb 10 



Length of head . ... 7 



Width of head 4 



Depth of head . 3 



Tore limb . ., . .8 



Hind limb .' 13 



Foot . 8 



Tail ... . .36 



This species is known from a single young specimen, obtained by 

 Dr. E. Hartert at Brass, mouth of the Niger. It occupies a perfectly 

 isolated position in the genus, and I have therefore proposed to make 

 it the type of a section, under the name of Tsenieremias, of which a 

 definition is given above, p. 228. 



VOL. IJ. 17 



