219. DENISONIA. 345 



posterior nasal in contact with or narrowly separated from the 

 single prseocular ; 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 mUlim. ; tail 80. 



Northern Australia. 



a-b. 5 (V. 178, 170 ; Port Essington. Lord Derby [P.]. ) 



c. Hgr. (V. 170; C. N.E.Australia. ( ^^yP^^'-' 



37). ) 



19. Denisonia melantira. 



Hoplocephalus melanurus, Bouleng. Proc. Zool. Soc. 1888, p. 88, and 

 1890, p. 30, pi. 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 praefrontals ; frontal as long as broad or slightly longer than 

 broad, twice as broad as the supraocular, a little longer than the 

 praefrontals, not much more than half as long as the parietals ; 

 posterior nasal in contact with the single praBocular ; 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. Yentrals 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) & $ Guadalcanar. C. M. Woodford, Esq. 



(V. 168, 167, 171, 167, [0.]. (Types.) 



165; 0.38, 45, ?, 38,43). 

 g. Skeleton. Guadalcanar. 



20. Denisonia par. 



Hoplocephalus par, Bouleng. Proc. Zool. Soc. 1884, p. 210, Trans. 

 Zool. hoc. xii. 1886, p. 46, pi. vii. fig. 4, and Proc. Zool. /Soc.lsyO, 

 p. 30 ; DovJgloA-OgUhy, Rec. Austral. Mus. i. 1890, p. 6. 



Eye nearly as long as its distance from the mouth. Eostral 

 broader than deep, just visible from above ; internasals half as long 

 as the prsefrontals ; frontal a little longer than broad, broader tha^i 



