126. CERBERUS. 15 
scale-like ; ten to twelve upper labials, fifth or sixth entering the 
eye or narrowly separated from it by suboculars; two or three 
pairs of chin-shields in a transverse row, inner in contact with the - 
three first lower labials. Scales in 37 to 47 rows. Ventrals 
160-171; anal divided; subcaudals 70-90. Above with broad 
transverse dark brown, black-edged cross-bands separated by narrow 
pale brown interspaces, which are whitish in the young; head pale, 
with a triangular or Y-shaped dark brown mark on the snout, a 
A-shaped mark on the vertex, and a dark brown band on,each side, 
beginning in front of and passing through the eye ; belly whitish, 
with a series of dark brown spots along each side; tail brown- 
spotted inferiorly. 
Total length 1050 millim. ; tail 230. 
Bengal (?), Burma, Indo- China, Malay Partudubil Sumatra, 
Borneo, Java. 
a. 3 (Sc. 41; V. 164; C. 83). India (?). Gen. Hardwicke [P.]. 
(Type of H. hardwickit.) 
5, e,d. Yg. (Se. 37,41,41; Bengal (?). Cen. Hardwicke [P.]. 
V. 162, 160, 160; C. 82, 
85, 78). 
“2 (Se. 47; V.169; C.?). Camboja. M. Mouhot [C.}. 
f-h. 3 (Sc. 41; V. 168; C. Pinang. Dr. Cantor. 
88) & ye. (Sc. 39, 40; V. 
163, 16f. C. 90, 86). 
a-l. Ye. (Se. 4l, 39, 37; V. Singapore. Dr. Dennys [P.]. 
165, 167, 161; C. 85, 85, 
76). 
m. & (Sc. 40; V. 168; C.77). Labuan. L. L. Dillwyn, Esq.[P.]. 
n. 9 (Se. 37; V. 160; C. 71). Java. Leyden Mus. 
0. hae (Se. 39; V. 162; C. 81). Batavia. 
© (&e. 45 ; es 167; C. —Y? Haslar Collection, 
85) & yg. (Se. 45; V. 170; 
C. 86). 
yr. Skull, Malacca. 
126. CERBERUS. 
Hydrus, part., Schneid. Syst. Amph. i. p. 283 (1799). 
Cerberus, Cur. Regne Anim. 2nd ed. ii. p. 81 (1829); Gray, Zool. 
Mise. p. 64 (1842), and Cat. Sn. p. 63 (1849) ; Dee & Bibr. Erp. 
Gén. vil. p. 977 (1854); Giinth. Rept. Brit. "Ind. p- 278 (1864) ; 
Bouleng. Faun. Ind., Rept. p. 874 (1890). 
Homalopsis, part., Schleg. Phys. Serp. ii. p. 3382 (1837); Jan, Arch. 
Zool, Anat. Phys. iii. 1865, p. 256. 
Maxillary teeth 12 to 17, followed, after a very short interspace, 
by two slightly enlarged, grooved teeth; anterior mandibular teeth 
longest. Head small, not very distinct from neck; eye small, 
with vertically elliptic pupil; snout covered with shields ; parietal 
shields more or less broken up into scales; nasals in contact 
behind the rostral, semidivided, the cleft extending from the nostril 
to the first or second labial; two internasals (rarely united) ; loreal 
