Eremias. 227 



group constitutiug the typical Eremias, which, though typical in 

 virtue of the rules of nomenclature, are the most remote from the 

 original type from the phylogenetic point of view. 



Synopsis of the Species. 



Section I. Lampkerejiias, Blgr.— Three (rai-ely four) nasals, the lower in 

 contact with the first iipjjer labial (rarely first and second) and with the 

 rostral ; ventral plates in 6 (exceptionally 8) straight longitudinal series ; 

 toes not or but feebly compressed, with hi- or tricarinate lamellse inferiorly. — 

 Tropical Africa. 



A. Frontal in contact with the two large supraoculars ; lower nasal narrowly 



in contact with rosti'al. 

 42 to 64 keeled scales across middle of body ; 121 to 24 lamellos 



under the fourth toe . . . . . 1. E. nitida, Gtlu-., p. 231. 



65 to 68 keeled scales across middle of body ; 26 lamelliB under 



the foiirth toe ; nostril between 4 shields. 



2. E. quadrinasalis, Chaban., p. 234. 



B. Frontal separated from the siipraoculars by small scales ; lower nasal 



extensively in contact with rostral, 

 60 to 77 keeled scales across middle of body ; 20 to 26 lamellte 



under the fourth toe ; iipper head-shields striated. 



3. E. s'pel'ii. Gthr., p. 235. 

 68 to 87 keeled scales across middle of liody ; 25 to 29 lamellse 



under the fourth toe ; upper head-shields smooth. 



4. E. lug^ibHs, A. Smith, p. 239. 

 Section II. Pseuderemias, Hoettg. — Four nasals, two lower in contact with 



tlie two or three first upper labials, the anterior also with the rostral ; ventral 

 l^lates in 6 to 10 straight longitudinal series ; toes strongly compressed, Avith 

 unicarinate lamellaj inferiorly ; frontal separated from the supraoculars by 

 small scales. — N.E.. Afi-ica and Sinaitic Peninsula. 



A. Upper head-shields smooth or rugose, not striated. 



Upper head-shields smooth or a little rugose ; 65 to 80 smooth 

 or feebly keeled scales across middle of body ; upper caudal 

 scales strongly keeled ; ventral plates in 6 or 8 longitudinal 

 series ; suboeular often bordering the mouth. 



5. E. mucronata, Blanf., p. 244. 

 Upper head-shields rugose or pitted ; 68 to 82 smooth scales 



across middle of body ; uiJjjer caudal scales strongly keeled ; 

 ventral plates in 8 or 10 longitudinal series; suboeular 

 not reaching the mouth . . . . 6. E. smithii, Blgr., p. 247. 

 Upper head-shields smooth ; 53 to 60 keeled scales across 

 middle of body ; upper cavidal scales feebly keeled ; ventral 

 plates in 8 longitudinal series ; suboeular not reaching the 

 moiith .I.E. erythrostida, Blgr., p. 2.50. 



B. Upper head-shields striated ; ventral plates in 6 or 8 longitudinal series ; 



53 to 68 keeled scales across middle of body. 

 Upper head-shields coarsely striated ; suboeular bordering the 



mouth ; 13 to 18 femoral pores on each side . 8. E. striata, Peters, p. 251. 



