228 Lacertidx. 



Upper head- shields finely striated ; subocular not reaching the 



mouth ; 20 to 24 femoral pores on each side . 9. E. hrenneri, Peters, p. 254. 



Section III. T^nieremias, Blgr. — Three nasals, the lower and the postei'ior 

 resting on the first upper labial ; %'entral plates in 10 straight longitudinal 

 series ; no occipital ; toes feebly compressed, -with tricarinate lamellae inferiorly. 

 — "West Africa. 



60 smooth scales across middle of body; 21 femoral pores on 



each side 10. E. guineensis, Blgr., p. 256. 



Section IV. Mesalixa, Gray. — Three nasals, the lower in contact with the 

 rostral and the first (very rarely first and second) upper labial ; ventral plates 

 in 10 to 18 (exceptionally 8) straight longitudinal series, rarely irregular 

 or tessellated ; occipital iisually present ; toes feebly compressed, with bi- or 

 tricarinate lamellae inferiorly. — Africa and S.W. Asia. 



A. North African and Asian species. Collar ciu-ved or angular, sometimes 



distinct on the sides only. 



1. Nasals in contact behind the rostral; 32 to 62 scales across middle 



of body ; 9 to 17 femoi-al pores on each side. 



Head and body rather strongly depressed, limbs moderately 

 slender; head If to 1| times as long as broad; occipital 

 present, nearly always in contact with the interparietal 

 or separated from it by a small shield; ventral plates in 

 10 (rarely 8) longitudinal series ; scales on upper surface 

 of tibia keeled . . . . . 11. E. guttulata,!,^^., y>. 2oS. 



Head and body strongly depressed, limbs very slender ; head 

 Ih times as long as broad ; occiijital absent or minute and 

 not in contact with interparietal ; ventral plates in 10 

 longitudinal series ; scales on upper surface of tibia smooth 

 or obtusely keeled . . . . 12. E. adramitana, Blgr., p. 271. 



Habit rather stovit; head not strongly depressed, 14 to 

 I3 times as long as broad; occipital absent or minute 

 and not in contact with interparietal ; venti-al plates in 

 12 (rarely 10) longitudinal series ; scales on iipper surface 

 of tibia smooth or obtusely keeled . 13. E. brevirostris, Blanf., p. 273. 



2. Eostral often in contact with frontonasal ; 53 to 67 



scales across middle of body ; occipital present ; ven- 

 tral plates in 1 2 (rarely 10 or 14) longitudinal series : 

 13 to 22 femoral pores on each side. 



14. E. ruhropunctata, Licht., p. 276. 



B. South Afi-ican species. Collar straight and perfectly free. 



1. A narrow tympanic shield ; ventral jjlates in 10 or 12 longitudinal 

 series; ^ to + of the lateral border of the frontal in contact 

 with the two large supraoculars; nasals in contact behind the 

 rostral. 

 Lower eyelid somi-transjiarcnt, with 10 to 12 enlarged scales 

 in the middle, one of which may be much larger than the 

 others; 47 to 65 scales across middle of body; ventral plates 

 in 12 (rarely 10) longitudinal and 28 to 33 transverse series. 



15. E. namaquensis, D. & B., j). 280. 



