2. AMBLYCEPHALUS, 441 
from neck ; eye moderate, with vertical pupil; nasal single. Body 
more or less compressed ; scales smooth or feebly keeled, without 
pits, more or less oblique, in 15 rows, vertebral row enlarged or 
not. Ventrals rounded. Tail moderate or short; subcaudals in 
two rows. 
South-eastern Asia. 
Synopsis of the Species. 
I. A single shield between the nasal and the eye; prefrontal 
entering the eye; one or two labials entering the eye. 
A. Frontal at least as broad as long; symphysial in contact with 
an azygous chin-shield; second or third lower labial very 
large, usually in contact with its fellow; ventrals 148-176; 
subcaudals 26-55. 
Dix upper Mipials 52. kk cece cs rece 1. levis, p. 441. 
Seven upper labials ................ 2. malaccanus, p. 442. 
B. Frontal longer than broad; symphysial in contact with a 
pair of chin-shields; ventrals 188-194; subcaudals 70-87. 
3. monticola, p. 443. 
AI. Loreal and preocular distinct ; eye separated from the labials 
by suboculars. 
A. Prefrontal entering the eye. 
1. Scales smooth ; eye bordered by four or five shields; 
ventrals 136-151 ; subcaudals 37-47. 
4, moellendorffii, p. 443. 
2. Dorsal scales feebly keeled. 
Eye bordered by five shields; ventrals 
153-155; subcaudals 38-46 ...... 5. andersonii, p. 444. 
Eye bordered by six shields .......... 6. modestus, p. 444. 
Eye bordered by seven or eight shields ; 
ventrals 164; subcaudals 51 ...... 7. macularius, p. 444. 
B. Prefrontal excluded from the eye. 
Ventrals 138; subcaudals 53 ........ 8. margaritophorus, 
Yentrals 161-183; subcaudals 57- [p. 445 
BO act ae se Re eres 9. carinatus, p. 445. 
1. Amblycephalus levis. 
Amblycephalus levis, Bote, Isis, 1827, p. 520; Bouleng. Faun. Ind., 
Rept. p. 415 (1890). 
iter eel Schleg. Phys. Serp. ii. p. 287, pl. xi. figs. 24 & 25 
1837) 
Pareas levis, Dum. & Bibr. vii. p. 442 (1854); Giinth. Cat. p. 185 
