324 COLUBRID. 
internasals not more than half the length of the prefrontals ; frontal 
not broader than the supraocular, twice to twice and a half as long 
as broad, considerably longer than its distance from the end of the 
snout, a little shorter than the parietals ; nasal divided, in contact 
with the single preocular; two postoculars ; temporals 2+ 2, lower 
anterior wedged in between the fifth and sixth upper labials, and 
sometimes reaching the lip; six upper labials, third and fourth 
entering the eye; three or four lower labials in contact with the 
anterior chin-shields, which are a little shorter than the posterior. 
Scales in 15 rows (17 on the neck). Ventrals 162-215; anal 
divided ; subcaudals 79-99. Olive, reddish brown, or dark brown 
above, most of the scales black at the base, some with light edges ; 
snout and sides of the head speckled or vermiculated with dark 
brown, and with an oblique dark streak below the eye to beyond 
the commissure of the jaws; these markings disappearing in full- 
grown specimens ; lower parts yellowish, uniform or speckled with 
olive, throat and anterior ventrals spotted with blackish in the 
young ; tail yellow or reddish. 
Total length 1010 millim. ; tail 240. 
Northern Australia and New Guinea. 
a, b. 3 (V. 163, 174; N.E. Australia, Sir J. Richardson [P.]. 
C. 95, 86 
. 95, 86). (Types.), 
e-d. g (V. 175; C. 97) Port Darwin. R. G. 8, Buckland, Esq. 
& 9 (V. 215; ©. 99). [C.}. 
e. Yg. (V. 162; C.79). Australia. 
Diemenia atra of Macleay is probably founded on a melanotic 
specimen of this species. 
4. Diemenia ? ornaticeps. 
Elapocephalus ornaticeps, Macleay, Proc. Linn, Soc, N.S.W. ii, 
1878, p. 221. 
Elapocranium ornaticeps, Macleay, Proc. Linn. Soc. N.S.W. ix. 
1884, p. 560. . 
Eye large. Scales in 15 rows. Ventrals 187; anal entire; 
subcaudals 90. Pale slate-colour above, each scale tipped with red ; 
head brown, each shield beautifully marked ‘with variously shaped 
white-margined black patches ; an orange collar on the nape; slaty 
white beneath, head and neck barred and spotted with black; end 
of tail yellow. 
Total length 255 millim. ; tail 65. 
Port Darwin, Northern Australia. 
5. Diemenia modesta. 
Mea hs oto Giinth. Ann. § Mag. N. H. (4) ix. 1872, p. 35, 
pl. iii. fig. C. 
Furina ramsayi, Macleay, Proc. Linn. Soc. N.S. W. x. 1885, p. 61. 
_Eye moderate. Rostral a little broader than deep, the portion 
visible from above about half as long as its distance from the 
frontal ; internasals one half to two thirds as long as the pre- 
