35. PSBUDOXTEHOPtrS. 315 



1. Pseudoxyrhopus microps. 



Pseudoxyrhopus microps, Giinth. Ann. Sr Mag. N. H. (5) vii. 1881, 

 p. 359, fig. ; Bouleng. Ann. 8,- Mag. N. H. (6) vi. 1890, p. 812, fig. 



Snout, obtuse, scarcely projecting. Eostral broader than deep, 

 just visible from above ; internasals much shorter than the prse- 

 t'rontals ; frontal as long as broad, as long as its distance from the 

 end of the snout, a little shorter than the parietals ; loreal longer 

 than deep; one prte- and two postooulars ; temporals 1 + 2, anterior 

 in contact with the lower subocular 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 25 rows. Ventrals 207-225 ; anal divided ; subcaudals 45. 

 Uniform blackish brown above, yellowish or pale brown below ; a 

 yellowish band may be present along the upper labials and across 

 the rostral. 



Total length 1080 miUim. ; tail 120. 



Madagascar. 



a. c? (V. 225; C. ?). Betsileo. Mr. T. Waters [C.]. 



(Type.) 

 6. d' ( V. 207 ; C. 45). Ankafana, Betsileo. Rev. W. D. Cowan [C.]. 



2. Pseudoxyrhopus heterurus. 



Homalocephalus heterurus, Jan, Arch. Zool. Anat. Phys. ii. 1863, 



p. 286, and Icon. Gen. 17, pi. iv. fig. 2 (1866). 

 Pseudoxyrhopus heterurus, Boettg. Abh. Sench. Ges. xii. 1881, 



p. 625. 



Snout obtuse, scarcely projecting. Eostral broader than deep, 

 just visible from above ; internasals much shorter than the prse- 

 frontals ; frontal a little longer than broad, as long as its distance 

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

 longer than deep ; one prse- and two postooulars ; temporals 

 1+2, anterior in contact with the lower subocular 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 155 ; anal divided ; sub- 

 caudals 35, 14 anterior single, the rest in pairs. Dark grey above, 

 yellowish inferiorly ; upper labials dark with whitish edges ; a 

 blackish median line under the tail. 



Total length 525 millim. ; tail 105. 



Madagascar. 



3. Pseudoxyrhopus quinquelineatus. 



Liophis quinquelineatus, Giinth. Ann. Sf Mag. N. H. (5) vii. 1881, 



p. .359, fig. 

 Pseudoxyrhopus quinquelineatus, Bouleng. Ann. ^ Mag. N. H. (6) 



vi. 1890, p. 313, fig. 



