A MONOGRAPH OF THE SEA-SNAKES (HYDROPHIIN A). 245 
—two small pairs, the posterior quite separated by scales. Costals,—31 to 33 in 
midbody ; juxtaposed, strongly tubercular. Ventrals,—small, subequal or smaller 
than the last costal row. 
Colour.—Y ellowish with dark annuli dilated vertebrally. 
Habitat.—Java. 
THALASSOPHIS ? ANNANDALEI (Laidlaw). 
Distira annandalei, Laidlaw in Proc. Zool. Soc. Lond., toot, vol. ii, p. 579, and 
figure. 
Boulgr., Fasc. Malay Zool., 1903, pt. 1, p. 166. 
(| 
4 
Se 
cy 
KV 
Fig. 60a. Thalassophis annandalei, x 2. After Laidlaw, in Proc. Zool. Soc., vol. ii, Igor. 
I have not seen a specimen. 
Description —-Rostral,—not broken up. ? Internasals,—broad in front, 
narrowed behind, separating the nasals. Prefrontals,—many arranged in two 
transverse series. Frontal,—more or less broken up behind, and thus separated 
by detached fragments from the parietals. Parietals,—irregular; an isolated 
part surrounded by small scales apparently derived from peripheral disintegration. 
Nostrils placed in single small scales which appear to be derived from the large 
shields anterior to them, designated herein as internasals. Analogy seems to indicate 
that the internasals so called herein should be considered nasals. Preoculars,— 
one. Postoculars,—two. Temporals,—three, small, hardly deserving recogni- 
tionas such. Supralabials—gto12,all subject to division. (I have numbered these 
shields in the annexed figure as I consider they should be regarded), the 4th to the 7th 
may touch the eye. Sublinguals,—one pair present, entire, or divided. Infra- 
labials ,—apparently irregular. Costals,—about 76 rows round the neck, go to 
100 at midbody, juxtaposed, more or less tuberculate. Ventrals ,—barely enlarged, 
350 to 370. 
Colour.—Pale greyish-olive above, white below ; back with dark cross-bars, nar- 
rower than the interspaces, tapering to a point on the sides. 
Halitat.—Malay Peninsula (Patani). 
