246 COLUBKIDiE. 



48. Tropidonotus sexlineatus. 



Droniicus sexlineatus, Giinth. Ann. <§• 3Iag. N. H. (5) ix. 1882, 



p. 2C4, fig. 



macrocercus, Giinth. I. c. p. 265. 



Leptopliis varius, Fischer, Jahrb. Hamb.natunv. Anst. i. 1884, p. 36, 



pi. iii. fig. 8. 



Eye rather small. Kostral nearly as deep as broad, visible from 

 above ; internasals broader than long, as long as or a little shorter 

 than the praefrontals ; frontal once and two thirds to once and 

 three fourths as long as broad, longer than its distance from the 

 end of the snout, shorter than the parietals ; loreal as long as deep 

 or deeper than long ; one (rarely two) prse- and two postociilars ; 

 temporals 1 + 2 ; eight upper labials, fourth and fifth entering the 

 eye ; four lower labials in contact with the anterior chin-shields, 

 which are shorter than the posterior. Scales smooth, in 17 rows. 

 Ventrals 143-157; anal divided; subcaudals 72 ( 5 ) to 152( c? )• 

 Tail of male nearly half the total length, of female two sevenths. 

 Olive-brown above, darker on the vertebral region ; a dark brown or 

 black lateral band from the end of the snout, through the eye, to the 

 angle of the mouth ; two other more or less distinct lateral streaks, 

 on each side, one above and one below, the latter bordering the 

 ventrals ; upper lip yellowish ; lower parts yellowish, uniform or 

 black- spotted. 



Total length 1060 miUim. 



Madagascar. 



a-c. $ (V. 146, 147, E. Betsileo. Eev. W. D. Cowan [C.]. 



145 ; C. 73, 76, 78). (Types.) 



d-f. 6 (V. 152, 157, E. Betsileo. Rev. W. D. Cowan [C.]. 



"154 ; C. 152, 150, ?). (Tvpes of D. macrocercus.) 



ff. 2 (V. 146 ; C. 77). Betsileo. Rev. G. Shaw [C.]. 



h. 2 (V. 145; C. 72). Madagascar. Eev. R. Baron [C.]. 



l c? (V. 157 ; C. 110). Madagascar. 



k, I. c? (V. 162 ; C. ?) Eastlmerina. Rev. R. Baron [C.]. 

 &$(V.143;C.72). 



49. Tropidonotus dolichocercns. 



Dromicus dolicocercus, Peracca, Bull. Mus. Torin. vii. 1892, no. 112, 

 pi. i. fig. 1. 



Eye rather large. E,ostral much broader than deep, just visible 

 from above ; internasals shorter than the prefrontals ; frontal once 

 and a half as long as broad, longer than its distance from the end 

 of the snout, a little shorter than the parietals ; loreal as deep as 

 long or deeper than long ; one prseocular ; two or three postoculars ; 

 temporals 1 -I- 2 ; eight upper labials, fourth and fifth entering the 

 eye ; four or five lower labials in contact with the anterior chin- 

 shields, which are nearly as long as the posterior. Scales smooth, 

 in 17 rows. Ventrals 148-156 ; anal divided ; subcaudals 97 ( $ ) 



