35. psEUDOxYRnopus. 315 



1 . Pseudoxyrhopus microps. 



Pseudoxyrhopus microps, Giinth. Ann. 8; Mat}. N. H. (o) vii. 1881, 

 p. 359", tig. ; Bouleny. Ann. 4" May. N. 11. (6) vi. 1890, p. 312, ttg. 



Snout obtuse, scarcely projecting. Rostral broader than deep, 

 just visible from above ; iuternasals much shorter than the pra3- 

 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 prae- and two postoculars ; tem])orals 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, wliich 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 lOSO millim. ; tail 120. 



Madagascar. 



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



(Type.) 



b. J (V. 207; C. 45). Aukafona, Betsileo. Rev. W. D. Cowan [C.]. 



2. Pseudoxyrhopus heterurus. 



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



p. 286, a7id Icon. Gen. 17, pi. iv. tig. 2 (1866). 

 Pseudoxj'rhopus heterurus, BueW/. Abh. Senck. Ges. xii. 1881, 



p. 525. 



Snout obtuse, scarcely projecting. Rostral broader than deep, 

 just visible from above ; iuternasals much .shorter than the prai- 

 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 prte- and two postoculars ; temporals 

 1-f 2, anterior in contact with the lower subocular only; eight 

 npper labials, fourth and fifth entering the eye ; four lower labials 

 in contact with the anterior chin-shiidds, 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 interiorly ; ui)per labials dark with whitish edges ; a 

 blackish median line under the tail. 



Total length d-27j millim. ; tail 105. 



Madaarascar. 



3. Pseudoxyrhopus quinquelineatus. 



Liophis quinquelineatus, Gimth. Ann. ^- May. N. H. (5) vii. 1881, 



p. 359, tig. 

 r.seucloxvrhopus quinquelineatus, Bouleny. Ann. ^- May. N. H. (6) 



vi. 1890, p. 313, tig. 



