Erennas. 235 



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. EEEMIAS SPEKII. 



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

 p. 49 (1869). 



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

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

 bot. Gi-es. 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. Ergebn, Deutsch. Z.-Afr. Exped. iv, ii, p. 223 

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

 Journ. Zool. Ees. 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, 1896, p. 168, and Proc. 

 Zool. Soc. 1895, p. 534. 



Eremias speMi, var. sextmniata, Tornier, I.e. ; 0. Neumann, Zool. 

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



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

 as broad, its length Sf to 4J 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 1| 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 1§ to \^ times the length of the head ; toes slender, feebly com- 

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



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



