35. PSEUDOXYRHOPUS, 315 
1. Pseudoxyrhopus microps. 
Pseudoxyrhopus microps, Giinth. Ann. § Mag. N. H. (5) vii. 1881, 
p. 359, fig. ; Bouleng. Ann. § Mag. N. H. (6) vi. 1890, p. 312, fig. 
Snout obtuse, scarcely projecting. Rostral broader than deep, 
just visible from above; internasals much shorter than the pre- 
frontals ; 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 pre- and two postoculars; temporals 1+2, anterior 
in conffict 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. 
Scalesin 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 millim. ; tail 120. 
Madagascar. 
a. 3 (V. 225; C. ?). Betsileo. Mr. T. Waters [C.]. 
, Bets wh. 
b. dg (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. Gén. 17, pl. iv. fig. 2 (1866). 
P Pseudoxyrhopus heterurus, Betty. Abh. Senck. Ges. xii. 1881, 
p. 525. 
Snout obtuse, scarcely projecting. Rostral broader than deep, 
just visible from above; internasals much shorter than the pre- 
trontals ; 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 pre- and two postoculars; 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. dan. § Mag. N. H. (5) vii, 1881, 
359, fi 
» ¢ , Og. 
Viaadi est Ae quinquelineatus, Bouleng. Ann. § Mag. N. H. (6) 
vi. 1800, p. 313, fig. 
