| 135. HOLOGERRHUM, 33 
nasals broader than long, a little smaller than the preefrontals ; 
frontal nearly twice as long as broad, longer than its distance from 
the end of the snout, shorter than the parietals; two superposed — 
loreals; one pre- and two postoculars ; temporals 1+2; seven 
upper labials, third and fourth entering the eye; four lower labials 
in contact with the anterior chin-shields, which are longer than the 
posterior, Scales in 19 rows. Ventrals 137; anal entire; sub- 
caudals 31. Brown above, with scattered small yellow spots ; 
lips, sides, and outer ends of ventrals closely dotted with blackish ; 
each labial with a round yellow spot; a crescentic yellow marking 
on each side of the neck, just behind the head; belly and lower 
surface of tail bright yellow. 
Total length 348 millim.; tail 48. 
Andrangoloka, Madagascar. 
135. HOLOGERRHUM. 
Hologerrhum, Giinth. Cat. Col. Sn. p. 186 (1858). 
Maxillary teeth 20, equal, followed, after a short interspace, by a. 
pair of enlarged, grooved fangs ; anterior mandibular teeth strongly 
enlarged. Head slightly distinct from neck; eye moderate, with 
round pupil. Body cylindrical ; scales smooth, without pits, in 17 
rows; ventrals rounded. Tail moderate; subcaudals single. 
Hypapophyses developed throughout the vertebral column, 
Philippine Islands. 
1. Hologerrhum philippinum. 
Hologerrhum philippinum, Giinth. Cat. p. 186 (1858), and Proc. 
Zool. Soc. 1873, p. 171, pl. xviii. fig. B.* 
Cyclochorus maculatus, Jan, Icon. Gén. 36, pl. vi. fig. 3 (1870). 
Rostral broader than deep, scarcely visible from above; inter- 
nasals as long as broad, a little shorter than the prefrontals ; frontal 
twice as long as broad, longer than its distance from the end of the 
snout, a little shorter than the parietals; loreal as long as deep; 
two pre- and two postoculars; temporals 1+1; eight upper labials, 
third, fourth, and fifth entering the eye; four lower labials in 
contact with the anterior chin-shields, which are shorter than the- 
posterior. Scales in 17 rows. Ventrals 144; anal entire; sub- 
caudals 40. Brown above, with a few alternating black spots on 
the anterior part of the back, and one or two black cross-bars 
behind the head; a black streak on each side of the head; passing 
through the eye; upper lip yellowish; a black line on each side of 
the posterior part of the body and of the tail; lower parts yellowish, 
with a black dot at the outer end of each ventral shield; on the 
tail these dots are confluent into a line. 
* The specimen from Placer, Mindanao, referred to this species by Giinther- 
(Proc. Zool. Soc. 1879, p. 78), belongs to Cyclocorus lineatus, e 
VOL. Ill, D 
