12. LIOHETERODON, 269 
searcely distinct from neck; snout pointed, projecting; rostral 
large, subtrihedral ; eye large, with round pupil. Body cylindrical; 
scales smooth, with apical pits, in 21 or 23 rows; ventrals rounded 
or obtusely angulate laterally. Tail moderate; subcaudals all or 
in two rows. Hypapophyses developed throughout the verte- 
ral column. 
Madagascar. 
1. Lioheterodon madagascariensis. 
Heterodon madagascariensis, Dum. § Bibr. vii. p. 776, pl. Ixix. 
(1854); Boettg. Abh, Senck. Ges. xi, 1877, p. 5, and xii. 1881, 
. 442. 
Fi ihe oe madagascariensis, Jan, Arch. Zool. Anat. Phys. ii. 1863, 
p- 227, and Icon. Gén. 10, pl. vi. fig. 1 (1865). 
Portion of rostral visible from above as long as or a little shorter 
than its distance from the frontal ; internasals as long as the pre- 
frontals ; frontal nearly once and a half as long as broad, as long as 
its distance from the end of the snout or a little shorter, as long as. 
the parietals ; loreal longer than deep ; one pre- and three or four 
postoculars ; temporals small, scale-like; eight upper labials, fourth 
and fifth entering the eye; five lower labials in contact with the 
anterior chin-shields, which are a little longer than the posterior. 
Scales in 23 rows. Ventrals 206-216; anal entire; subcaudals 
62-73, the anterior single. Brown or black above, with pale brown 
or yellowish spots; sides yellowish, with two alternating series of 
black spots, the upper of which may be confluent into a zigzag 
band ; upper labials yellowish, with black sutures ; lower parts 
yellowish, with small black spots. 
Total length 1020 millim. ; tail 170. 
Madagascar. 
a. Q te 206; C. 62). Imerina. Rev. R. Baron [C.}. 
b. 2 (V. 216; C. 67). Madagascar. Rey. R. Baron bot 
e, d. 9 (V. 207 ; C. 64) Madagascar. 
& yg. (V.210; C. 70). 
2. Lioheterodon modestus. (Prare XVIII. fig. 1.) 
Heterodon madagascariensis, Giinth. ae 3 84 (1858). 
—— modestus, Giinth. Ann. § Mag. N. H. (3) xii. 1863, p, 356. 
Anomalodon madagascariensis, Steindachn, Novara, Rept. p. 90 
(1867). 
Closely allied to the preceding, but scales in 21 rows, ventrals 
159-170, and subcaudals 54-62, all in pairs, or a few of the anterior 
single. Pale brown above, uniform or with two or three more or 
less distinct darker stripes; uniform yellowish below. 
Total length 920 millim.; tail 200, 
Madagascar, 
‘ 
_—— a. 
