Eremias. 235 



helovr the eye, through the tympauum, to the tail; limbs lilackish, 



with numerous round light spots. 

 Measurements (in millimetres) : 



From end of snout to vent . . . .66 

 Length of head ...... 16 



Width of head 9-5 



Fore limb 19 



Hind limb 38 



Foot 20 



The single specimen on which this species is founded was obtained 

 by the Chevalier-Decorse Mission in the Shari-Chad district and is 

 preserved in the Paris Museum. 



3. EREMIAS SPEKII. 



Eremias lugubris (non A. Smith), Peters, Deckeu's Eeise, iii, Eept. 

 p. 49 (1869). 



Eremias spekii, Giinth. Ann. & Mag. N. H. (4) ix, 1872, p. 381 ; 

 Bouleug. Cat. Liz. iii, p. 84, pi. iv, fig. 2 (1887) ; Werner, Verh. Zool.- 

 bot. Ges. Wien, xlv, 1895, p 191 ; Tornier, Zool. Jahrb., Syst. xxii, 

 1905, p. 377 ; Werner, Sitzb. Ak. Wien, cxvi, i, 1908, p. 1845 ; Sternf. 

 in Schubotz, Wiss. Ergebu. Deutsch. Z.-Afr. Exped. iv, ii, p. 223 

 (1912) ; Nieden, Mitt. Zool. Mus. Berl. vii, 1913, p. 78 ; Bouleng. 

 Jouru. Zool. Res. iii, 1918, p. 3. 



Eremias rugiceps, Peters, Mou. Berl. Ac. 1878, p. 202, pi. ii, fig. 1. 



Eremias sextmniata, Stejneg. Proc. U.S. Nat. Mus. xvi, 1894, 

 p. 718; Bouleng. Ann. & Mag. N. H. (6) xvi, 1895, p. 168, and Proc. 

 Zool. Soc. 1895, p. 534. 



Eremias spekii, var. sextxniata, Tornier, I.e. ; O. Neumann, Zool. 

 Jahrb., Syst. xxii, 1905, p. 396. 



Head and body moderately depressed. Head H to 1| times as long 

 as broad, its length 3f to 4i times in length to vent, its depth equal to 

 the distance between the anterior corner of the eye and the tympanum ; 

 snout rather obtusely pointed, as long as the postocular part of the 

 head ; nasals not or but feebly swollen ; canthus rostralis sharp or rather 

 obtuse, loreal region feebly concave ; frontal concavity feeble or 

 absent. Pileus If to 2 times as long as broad. Neck as broad as the 

 head or a little constricted. Hind limb reaching the ear or the eye in 

 males, the collar, the ear, or between the ear and the eye in females ; 

 foot 11 to Ih times the length of the head ; toes slender, feebly com- 

 pressed. Tail If to 2J times as long as head and body. 



Upper head-shields flat, strongly and closely striated. Nasals in 



