31 G COLTJBRIDJi;. 



Snout prominent, snbcuneiform. Rostral broader than deep, the 

 portion visible from above at least half as long as its distance from 

 the frontal; internasals shorter than the prajfrontals ; frontal a 

 little longer than broad, as long as its distance from the end of the 

 snout, a little shorter than the parietals ; loreal longer than deep ; 

 one proe- and two postoculars ; temporals 1+2, the anterior in 

 contact ^\•ith the lower postocular only ; eight upper labials, fourth 

 and fifth entering the eye ; four lower labials in contact with the 

 anterior chin-shields, which are as long as the posterior. Scales 

 in 21 rows. Ventrals 142; anal divided; subcaudals 45—17. 

 Brown above ; a broad margin round the upper jaw yellowish, 

 both colours being divided by a sharply-defined line ; five blackish 

 lines along the body ; a few brown spots on the labials ; lower 

 parts uniform yellowish. 



Total length 490 millim. ; tail So. 



Madagascar. 



a-b. c? (V. 142; C. 47) & $ Betsileo. Mr. T. Waters [C.'l. 



(V. 142; C.4o). (Types.) 



4. Pseudoxyrhopus imerinae. 



Coronella microps, Bouleyuj. Ann. 8f Mag. N. H (6) i. 1888, p. 104, 



pi. V. fig. 4. 

 Liophis imeriiipe, Giinth. Ann. S,' Mag. N. H. (G) v. 1800, p. 71. 

 Pseudoxyrhopus imerinte, Bvnkm/. Ann. ^- Mar/. N. H. (iS) vi. 1890, 



p. 313; tig. 



Rostral broader than deep, the portion visible from above about 

 half as long as its distance from the frontal ; suture between the 

 internasals a little shorter than that between the prajfrontals ; 

 frontal about once and a half as long as broad, longer than its dis- 

 tance from the end of the snout, shorter than the parietals ; loreal a 

 little longer than deep ; one prao- and two (rarely three) post- 

 oculars ; temporals l-|-2, the anterior in contact with the lower 

 postocular only, rarely 2 + 3; eight upper labials, fourth and fifth, 

 or third, fourth, and fifth, entering the eye ; four lower labials 

 in contact with the anterior chin-shields, which are as long as the 

 posterior. Scales in 19 rows. Ventrals 137-148 ; anal divided ; 

 subcaudals 40-47. Young pale brown above, with six or eight 

 dark brown longitudinal lines, the median pair bordering a band 

 of darker browu than the ground-colour ; upper surface of head 

 with dark brown variegations ; a dark brown streak on each side 

 of the head, passing through the eye, bordered below by a white 

 streak ; upper lip dark brown ; throat brown, with white markings ; 

 belly pale brown, each shield with a darker anterior margin. 

 Adult with the dorsal m.arkings more or less distinct, and the belly 

 nearly black. 



Total length 400 millim. 



Madagascar. 



