7. MABTTIA. 153 



tti Ear-lobules long. 



31 to 34 scales round the bod}- ; four 



supraciliarics; interparietal larger than 



the frontoparietals 15. socotrana, p. 168. 



28 to 32 scales round the body ; five 



supraciliarics ; interparietal not larger 



than the frontoparietals 18. Tiomalocephala, p. 170. 



ft Subdigital lamellte keeled ; 30 to 32 scales round 

 the body. 



Nasals separated ; dorsal scales strongly 



keeled ; scales on the anterior border 



of the ear not differentiated 49. trivittata, p. 195. 



Nasals separated ; dorsal scales feebly 



keeled : two or three large projecting 



^ auricular lobules 50. occidentalis, p. 196. 



Nasals in contact behind the rostral. . . . 51. ivensii, p. 197. 



** 34 or more scales round the middle of the body. 



34 to 38 scales round the body ; the 



adpressed hind limb reaches nearly 



the axil ; ear-opening at least twice 



as large as the transparent palpebral 



disk 5. punctata, p. 160. 



36 scales round the body ; the hind limb 



does not reach the elbow of the ad- 

 pressed fore limb ; snout short 19. gruetzneri, p. 171. 



36 to 44 scales round the body ; the 



adpressed hind limb reaches the elbow 



or beyond ; ear-opening a little smaller 



than the transparent palpebral disk. . 52. quinquetcBniata,'^.\QS. 



y. Dorsal scales bicarinate ; 30 to 32 scales round the 

 body. 

 First supraocular in contact with the 



frontal 17. brevicollis, p. 169. 



First supraocular not touching the 



frontal 41. hnrficaudata, p. 189. 



0. Dorsal scales perfectly smooth. 



* Ear-opening entirely exposed ; 28 to 34 scales round 

 the body. 



One pair of nuchal shields ; snout short, 



obtuse ; tail not twice as long as head 



and body ; praeanals not or scarcely 



enlarged, six or seven bordering the 



anal cleft 43. agili'?, p. 190. 



One pair of nuchals ; tail twice as long 



as head and body ; three supraoculars ; 



a black vertebral line 44. dorsivittafa, p. 192. 



