A MONOGRAPH OF THE SEA-SNAKES (HYDliUPHIlNAi). 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.— Yellowish with dark annuli dilated vertebrally. 



Habitat. — Java. 



Thalassophis ? annandalei (Laidlaw) . 



Distira annandalei, Laidlaw in Proc. Zool. Soc. Lond., 1901, vol. ii, p. 579, and 



figure. 

 ,, ,, Boulgr.. Fasc. Malay Zool., 1903, pt. i, p. 166. 



Fig. 6o«. Thalassophis annandalei, x 2. After Laidlaw, in Proc. Zool. Soc, vol. ii, 1901. 



I have not seen a specimen. 



Description. — Rostral, — not broken up. ? Inter 11 asals , — broad in front, 

 narrowed behind, separating the nasals. Prsef rontals , — 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. Prse oculars, — 

 one. Postoculars ,— two. Temporals , — three, small, hardly deserving recogni- 

 tion as such . Supralabial s — 9 to 1 2 , all sub j ect 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, 90 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. 



Habitat. — Malay Peninsula (Patani). 



