816 MR. G. A. BOULENGER ON BATRACHIANS 
nasal elongate, entire ; no loreal; przefrontal in contact with the 
second and third upper labials ; one preocular, in contact with 
the frontal ; two postoculars; temporals 1 + 2; eight upper 
labials, fourth and fifth entering the eye; five lower labials 
in contact with the anterior chin-shields, which are shorter than 
the posterior. Scales in 15 rows, finely striated and strongly 
keeled, the two outer rows smooth. Ventrals feebly angulate 
laterally, 139; anal divided; subcaudals 127. Scales partly 
green partly brownish, with golden sheen; upper lip white; a 
black line on each side of the head, above the labialis, passing 
through the eye; lower parts pinkish, with mother-of-pearl 
sheen. 
Total length 580 mm.; tail 245. 
A single female specimen. 
Well distinguished, among the species with keeled scales and 
no loreal, by the low number of ventral shields. 
15. XENODON COLUBRINUS Gthr. 
16. RwApInmA DECORATA Gthr. 
A young specimen, referred with some doubt to this species. 
17. Oxyruopus PeroLartius L, 
18. RuiNoBotHRYUM LENTIGINOSUM Scop. 
19. OXYBELIS BREVIROSTRIS Cope. 
20. OXYBELIS ACUMINATUS Wied. 
21. HoMALOcRANIUM NIGRUM, sp.n. (PI. II. figs. 2, 2 a.) 
Eye two-fifths the length of the snout. Rostral nearly twice as 
broad as deep, scarcely visible from above; internasals half as 
long as the preefrontals ; frontal pentagonal, a little longer than 
broad, more than twice as broad as the supraocular, a little 
longer than its distance from the end of the snout, much shorter 
than the parietals; nostril between the nasals, the posterior in 
contact with the preocular ; a single postocular ; temporals 1+1 ; 
seven upper labials, third and fourth entering the eye ; first lower 
labial in contact with its fellow behind the symphysial; four 
lower jabials in contact with the anterior chin-shields, which are 
longer than the posterior. Scales in 15 rows. Ventrals 143 ; 
anal divided ; subcaudals 63. Black above and beneath ; a pair 
of round yellow spots close together on the occiput; a larger, 
oblique spot on each side of the latter, behind the angle of the 
mouth; a narrow, oblique yellow spot on the fifth and sixth 
upper labials, and a very small round one on the second upper 
labial, 
Total length 175 mm. ; tail 48. 
