440 AMBLYCEPHALID2. 
Dipsas boa, Schleg. Phys. Serp. ii. 1. 9 & 30 
(1837) ; Cantor, Cat. Mal. Rept. p. ne oan eg is yi’ baz). 
lopeltura boa, Dum. § Bibr. vii. p. 444 (1854 
PP etcolsocltars boa, Boettg. Ber. Offenb. Ver. Wat "1892, p- 154, 
Snout very short and deep. ostral narrow, once and a half to 
twice as deep as broad, just visible from above; internasals shorter 
than the prefrontals; frontal not broader than the supraocular, 
once and two thirds to twice as long as broad, longer than its 
distance from the end of the snout, as long as or a ‘little longer than 
the parietals; two or three enlarged occipitals ; two or three super- 
posed loreals, the lower often entering the eye, which is bordered 
by six to eight shields in addition to the supraocular; temporals 
3+3 or 4; eight to ten upper labials, none entering the eye; two 
pairs of lower labials in contact on the median line behind the 
symphysial ; three or four pairs of large chin-shields, the anterior 
pair sometimes fused to a single azygous shield or preceded by an 
azygous shield. Scales in 13 rows, vertebrals strongly enlarged. 
Ventrals 148-170; anal entire; subcaudals 88-120. Yellowish 
or pale brown above, yellowish beneath, mottled with dark brown ; 
usually with large dark brown blotches, which may extend across 
the belly ; a large dark brown blotch on the head; sides of head 
yellowish white, with three or more dark streaks radiating from the 
eye. 
TPotal length 750 millim.; tail 220. 
Pinang, Borneo, Philippines, Java, Moluccas. 
a-b. 2 (V. 167, 160; Pinang. Dr. Cantor. 
C. 106, 108). 
ec, Hgr. (V. 165; C.107). Sarawak. Sir H. Low [ Let 
d. gd (V. 158; ©. 120), Baram, Sarawak. C. Hose, Esq. [C.]}. 
e. 2 (V. 163 ; C. 116). Borneo, 
ree Oe 156 ; ©. 100). Palawan. | A. Everett, Esq. [C.]. 
g. & (V. 162; CO. 88). Balabac. A. Everett, Esq. [C. }. 
h. 2 (V. 148; C. 98). Philippines. Fo} Cuming, sq. 
z. 2 (V. 150; C. 99). Java. Leyden Museum. 
k, Hgr. (V.155; 0.97). Java. Dr. Horsfield [P.}. 
1. 2 skeleton. Sarawak. A. Everett, Esq. 0. } 
2. AMBLYCEPHALUS. 
Amblycephalus, Kuhl, Isis, 1822, “he 474; Bote, Isis, 1827, p. 519; 
Bouleng. Faun. Ind., Rept. p (1890). 
—_ agler, Syst. ‘Amph. p Pel (1830) ; Dum. & Bibr. pr Gén, 
i. p. 438 (1854) ; Giinth. Cat, Col, Sn. p. 184 (1858), and Rept. 
Brit Ind, p, 826 (1864), 
Dipsas, part., Schleg. Phys. Serp. ii. p. 257 (1837). 
Leptognathus, part., Jan, Elenco sist. Oftd. p. 100 (1863). 
Asthenodipsas , Peters, Mon. Berl, Ac, 1864, p. 273. 
Maxillary bone very short, deep, with 5 or 6 subequal teeth ; 
mandibular teeth gradually decreasing in length.. Head distinct 
