2. AMBLYCEPHALUS. 445 
Pareas margaritophorus (non Jan), Theob. Cat. Rept. Brit. Ind. p, 203 
(1876). ‘ 
Amblycephalus macularius, Bouleng. Faun. Ind. Rept. p. 416 
(1890); W. L. Sclater, Journ, As. Soc. Beng. 1x. 1891, p. 248. 
Rostral a little broader than deep; internasals about half the 
length of the preefrontals ; latter entering the eye; frontal a little 
longer than broad, longer than its distance from the end of the 
snout, a little shorter than the parietals; supraocular moderate, 
nearly half the width of the frontal; a small loreal; one preocular, 
one postocular, and three or more suboculars, excluding the labials 
from the eye; temporals much elongate,2+2; seven upper labials, 
seventh very large; three pairs of large chin-shields. Scales in 15: 
rows, dorsals feebly keeled. Ventrals 164; anal entire; sub- 
caudals 50. Pale brown or reddish brown above, with transverse 
series of dark brown and white spots; lower parts brownish white, 
spotted with brown. 
Total length 405 millim. ; tail 70. 
Tenasserim. 
a. o (V. 164; C. 50). Tenasserim. W. Theobald, Esq. [C.]. (Type.) 
8. Amblycephalus margaritophorus. 
Leptognathus margaritophorus, Jan, N. Arch. Mus. ii. 1866, Bull. 
p. 8. 
Loreal separated from the eye by the prxocular ; eye surrounded 
by four shields and the supraocular; seven upper labials, none 
entering the eye. _ Scales smooth, in 15 rows. Ventrals 138; anal 
entire; subcaudals 53. SBlackish above, with transverse ‘series of 
white spots ; a white, black-edged nuchal collar. 
Total length 250 millim.; tail 56. 
Siam. 
9. Amblycephalus carinatus. 
Amblycephalus carinatus, Boze, Isis, 1828, p. 1035; W. L. Selater, 
Journ. As. Soc. Beng. |x. 1891, p. 248; Boettg. Ber. Offend. Ver. 
Nat, 1892, p. 135. 
Dipsas carinata, Schleg. Phys. Serp. ii. p. 285, pl. xi. figs. 26-28 
(1837), and Abbild. p. 135, pl. xlv. figs. 10-12 (1844). 
Beier esi ke Dum, & Bibr. vii. p. 489 (1854) ; Giinth. Cat. p. 185 
(1858). 
Leptognathus carinatus, Jan, Elenco, p. 101 (1863), and Icon. Gén, 
37, pl. iv. fig, 3 (1870). 
Pareas carinata, part., Giinth. Rept. Brit. Ind. p. 326 (1864).! 
—— berdmorii, part., Theob. Cat. Rept. As. Soc. Mus. 1868, p. 68. 
Rostral small, deeper than broad; internasals two thirds the 
length of the preefrontals ; frontal as long as broad or a little longer 
than broad, longer than its distance from the end of the snout, as 
long as or a little shorter than the parietals ; loreal deeper than long ; 
eye surrounded by five to seven shields in addition to the supra- 
ocular, viz., one or two preoculars, two or three suboculars, one or 
