219. DENISONIA. 345 
posterior nasal in contact with or narrowly separated from the 
single preocular ; two postoculars ; temporals 2+ 2, lower anterior 
wedged in between the fifth and sixth upper labials; six upper 
labials, third and fourth entering the eye; three or four lower 
labials in contact with the anterior chin-shields, which are nearly 
as long as the posterior. Scales in 15 rows. Ventrals 170-178; 
anal entire; subcaudals 37-38. Dark olive-brown above, head 
somewhat paler; yellowish beneath, subcaudals brown in the 
middle. 
Total length 590 millim. ; tail 80. 
Northern Australia. 
va e Lf 178, 170; Port Essington. Lord Derby [P.]. 
C. Her. (V. 170; C. N.E. Australia. (Types.) 
). 
19. Denisonia melanura. 
Hoplocephalus melanurus, Bouleng. Proc. Zool. Soc. 1888, p. 88, and 
1890, p. 30, pl. ii. fig. 1. 
Eye nearly as long as its distance from the mouth. Rostral 
broader than deep, just visible from above ; internasals half as long 
as the prefrontals ; frontal as long as broad or slightly longer than 
broad, twice as broad as the supraocular, a little longer than the 
prefrontals, not much more than half as long as the parietals ; 
posterior nasal in contact with the single preocular; two post- 
oculars ; temporals 1+2; seven upper labials, third and fourth 
entering the eye, sixth largest; four lower labials in contact with 
the anterior chin-shields, which are shorter than the posterior. 
Scales in 15 or 17 rows. Ventrals 165-171; anal divided; sub- 
caudals 38-48, Head and sides usually reddish, dorsal region dark 
brown; some or all of the scales black-edged ; tail black; some 
specimens nearly entirely black, others with traces of black cross- 
bands; ventrals yellow, on the hind part of the body with dark 
brown or black margin. 
Total length 1000 millim. ; tail 140, 
Guadalcanar, Solomon Islands, 
a-f. d (V.168;C.48)& 9  Guadaleanar. — C. M. Woodford, Esq, 
(V. 168, 167, 171, 167, [C.}. (Types.) 
165; C. 88, 45, ?, 8, 43), 
g. Skeleton. Guadalcanar. 
20. Denisonia par. 
Hoplocephalus par, Bouleng. Proc. Zool. Soc. 1884, p. 210, Trans, 
Zool. Soc, xii. 1886, p. 46, pl. vii. fig. 4, and Proc. Zool. Soc. 1890, 
p- 80; Douglas-Ogilby, Rec. Austral. Mus. i, 1890, p. 5. 
Eye nearly as long as its distance from the mouth. Rostral 
broader than deep, just visible from above ; internasals half as long 
as the prefrontals ; frontal a little longer than broad, broader than 
