32 COLUBRIDiE. 



jS. Nasal in contact witli the rostral. 



200. Macrelaps, p. 255. 



b. Maxillary short, with. 6 to 10 solid teeth. 



Posterior maxillary teeth large and strongly grooved. 



201. Aparallactus, p. 255. 



Posterior maxillary teeth feebly enlarged and feebly grooved. 



202. Elapops, p. 262. 



134. GEODIPSAS. 



Maxillary teeth 14 or 15, equal, followed, after an interspace, by 

 a pair of enlarged grooved fangs ; mandibular teeth subequal. 

 Head distinct from neck ; eye moderate, with round pupil. Body 

 cylindrical ; scales smooth, without pits, in 19 rows ; ventrals 

 rounded. Tail moderate ; subcaudals in two rows. Hypapophyses 

 developed throughout the vertebral column. 



Madagascar. 



1. Geodipsas infralineata. (Plate III. fig. 1.) 



Tachymenis infralineatus, Cfiinth. Ann. i^ Maff. iV. JV. (5) ix. 1882, 

 p. 265. 



Eostral broader than deep, just visible from above; internasals 

 broader than long, a little shorter than the prsefrontals ; frontal 

 once and a half to once and two thirds as long as broad, longer than 

 its distance from the end of the snout, shorter than the parietals ; 

 loreal trapezoidal, as long as deep ; one pree- and two post- 

 oculars; temporals 1 + 2; seven upper labials, third and fourth 

 entering the eye ; four lower labials in contact with the anterior 

 chin-shields, which are shorter than the posterior. Scales in 19 

 rows. Ventrals 172-187 ; anal entire ; subcaudals 55-62. Brown 

 above, uniform or with small blaoMsh spots ; a black streak along 

 the upper surface of the tail and the posterior part of the back ; a 

 dark streak on each side of the head, behind the eye, and another 

 in the middle, from the frontal to the occiput ; lower parts yellow, 

 with some brown dots and a continuous or interrupted brown 

 streak along the middle of the belly and tail. 



Total length 760 millim. ; tail 150. 



Madagascar. 



a. $ (V. 187; 0.62). E. BetsiUo. Eev. W. D. Cowan 



[0.]. (Type.) 



b. 5 (V. 172; 0.55). E. Imeriua. Rev. E. Baron [0.]. 



2. Geodipsas boulengeri. 



engeri, Peracca, Boll. Mus. 71 



Eoatral broader than deep, scarcely visible from above ; inter 



Tachymenis boulengeri, Peracca, Boll. Mus. Torin. vii. 1892, no. 112 

 p. 3. 



