172 COLUBRID. 
* A i 149, 140; _Imerina. Rey. J. Wills [C.]. 
f. Yg. (V.146; 0.71). Imerina. Rev. R. Baron [C.}. 
B. Dorsal stripe with dentated borders or replaced by spots, and 
with a more or less distinct light median line; sides and belly 
spotted or irregularly lineolated. 
a. o (V. 156; C. 80). Betsileo. Rey. G. Shaw [C.]. 
4. Hgr. (V. 151; C.80). S.W. Madagascar. Mr, Last [C.}. 
t 2 (V. 150, 152, 159, 
154; OC. 81, 81, ?, 88). 
A. Yg. (V. 164; 0.102). —P Zoological Society. 
z. Skull of a 
173. PSAMMODYNASTES. 
Psammophis, part., Bote, Isis, 1827, p. 521; Schleg. “ae Serp. ii. 
. 201 (1837); Dum. § Bibr. Erp, Gén. vii. p. 887 (1854) ; Peters, 
on, Berl. Ac, 1868, p. 452. 
Psammodynastes, Giinth. Cat. Col. Sn. p. 140 (1858); Jan, Elenco 
sist. Ofid. p. 90 (1863); Giinth. Rept. Brit. Ind. p. 292 (1864) ; 
Mocquard, Bull. Soc. Philom. (7) xi. 1887, p. 172 ; Bouleng. Faun. 
Ind., Rept. p. 363 (1890). 
Maxillary teeth 9 to 11, third or third and fourth much enlarged, 
fang-like, followed by a short interspace, last enlarged and grooved 
anterior mandibular teeth strongly enlarged. Head distinct from 
neck, with angular canthus rostralis; eye rather large, with verti- 
cally elliptic or subelliptic pupil; nostril in a single nasal; frontal 
very narrow. Body cylindrical ; scales smooth, without pits, in 17 
or 19 rows; ventrals rounded. Tail moderate or rather short ; 
subcaudals in two rows. 
South-eastern Asia. 
V Psammodynastes pulverulentus. 
Psammophis polvewnlente, Boie, Isis, 1827, p. 547; Schleg. Phys. 
Serp. ii, p. 211, pl. viii. figs. 10 & 11 (1887), and Abbild. pl, xiii. 
figs. 1-4 (1844); Dum. § Bibr. vii. p. 895 (1854). 
Dipsas ferruginea, Cantor, Proc. Zool. Soc. 1889, p. 53; Blyth, Journ. 
As. Soc. Beng. xxiii, 1854, p. 298, and xxiv. 1855, p. 715, 
Psammodynastes pulverulentus, part., Giinth. Cat. p. 140 (1858). = 
—— pulverulentus, Giinth. 1. c, p. 251, Rept. bs it. Ind, p. 292 e, 
(1864), and Zool. Rec. 1867, p. 168 : Theob. Cat. t. Brit, Ind. 
. 188 (1876); Fischer, Arch. f. Nat. 1885, p. 62; Mocquard, 
ull. Soc. Philom. (7) xi. 1887, p. 172, pl. iii., and xii. 1888, p. 104; 
Bouleng. Faun. Ind., Rept. p. 363 (1860). 
Lycodon bairdi, Steind. Novara, Rept. p. 90 (1867). 
Snout short, profile truncate or somewhat turned up in the 
adult. Rostral broader than deep, scarcely visible from above ; 
internasals much shorter than the prefrontals ; frontal twice to 
