124. HYPSIRHINA. 7 
Homalopsis olivaceus, Cantor, Proc. Zool. Soe. 1839, p. 55. 
_Hypsirhina trilineata, Gray, Zool. Mise. p. 66 (1842). 
—— bilineata, Gray, l. ¢., and Cat. p. 73. 
— furcata, Gray, ll. cc. 
aer, Gray, Cat. p. 72. 
Homalopsis enhydris, Cantor, Cat. Mal. Rept. p. 99 (1847). 
Hypsirhina enhydris, Dum. § Bibr. vii. p. 946 (1854) ; Giinth. Rept. 
Brit, Ind. p. 281, pl xxii. fig. K (1864) ; Jan, Arch. Zool. Anat. 
Phys. iii. 1865, p. 61, and Icon. Gén. 30, pl. iii. fig. 2, & v. fig. 1 
(1868) ; Theob. Cat. Rept. Brit. Ind. p. 183 (1876) ; Bouleng. Faun. 
Ind., Rept. p. 876 (1890). 
Rostral twice as broad as deep; internasal single, nearly twice 
as broad as long; frontal nearly twice as long as broad, as long as 
or shorter than its distance from the end of the snout, as long as 
the parietals ; loreal as long as deep or a little longer than deep, in 
contact with the internasal; one pre-and two (rarely one) post- 
oculars; temporals 1+2,; eight upper labials, fourth entering the 
eye; four lower labials in contact with the anterior chin-shields, 
which are shorter than the posterior ; latter widely separated from 
each other. Scales in 21 rows, rarely 23 (specs. a,c). Ventrals 
150-177 ; anal divided; subcaudals 47-78. Dark grey, brown, or 
olive above, with two more or less distinct light longitudinal bands ; 
lower parts whitish, with a blackish line along each side of the 
ventrals, and usually a median blackish line or series of dots. 
Total length 680 millim.; tail 135. 
Bengal, Southern India, Ceylon, Burma, Southern China, Cochin- 
china, Siam, Malay Peninsula and Archipelago. 
A. A dark median ventral line. (H. enhydris, Schn.; H. tri- 
lineata, Gray.) 
a. @ (V. 155; C.?). India. (Type of H. trilineata.) 
b, oe 3 (V. 157,157; OC. India. W. Masters, Esq, [P.]. 
67, 64). 
d-e. Yg. (V. 162, 158; Bengal (?). Dr. Cantor. 
C. 66, 67). 
Ff. 2 (V. 163; C. 60). Darjeeling (?). T. C. Jerdon, Esq. [P.]. 
gale UV «100 3, O. 71). Siam. 
A-r. Yg. (V. 170, 168, Siam. Sir R. Schomburgk [P.]. 
172, 170, 177, 166, 168, 
166, 171, 164; C. 78, 
75, 74, 74, 72, 68, 62, 
64, 68, 64.) 
s-t. S (V. 158; C.64)& Pinang. Dr. Cantor. 
Q (V. 157; C. 53). 
u. Vis 2 (V. 168; C. Singapore. R. Swinhoe, Esq, [C.]. 
69). 
v. 2 (V. 159; C. 63). Borneo. Leyden Museum. 
B. Median ventral line absent or reduced to a few widely sepa- 
rated dots. (H. bilineata, Gray ; H. furcata, Gray.) 
a. d (V. 161; C. 63). China. W. Lindsay, Esq. [P.]. 
: (Type of H. dilineata.) 
