338 COLUBEID^. 



Denisonia frenata. 

 Hoplocephalus frenatus, Peters, Mon. Berl. Ac. 1870, p. 646. 



Frontal nearly twice as long as broad; nasal not reaching the 

 prseocular; two postoculars ; temporals 2 + 2; six upper labials. 

 Scales in 19 rows. Ventrals 167 ; anal entire ;_ subcaudals 35, 

 Olive- brown above; upper lip yellow; a j'ellow line on each side 

 of the head, passing through the eye ; white beneath, 



Total length 390 millim. ; tail 54. 



Lake Elphinstoue, Queensland. 



6. Denisonia ramsayi. 



Hoplocephalus ramsayi, Krefft, Proc. Zool. Soc. 1864, p. 181, and Sn. 

 Austral, p. 66, pi. xi. fig. 2 (1869). 



Eye moderate. Eostral just reaching the upper surface of the 

 head ; internasals shorter than the prsefrontals ; frontal twice as, 

 long as broad, not broader than the supraocular, longer than its 

 distance from the end of the snout, shorter than the parietals ; 

 nasal entire, not reaching the single prseocular ; two postoculars ; 

 six upper labials, second and third in contact with the prsefrontal, 

 third and fourth entering the eye. Scales in 15 rows. Ventrals 

 164; anal divided; subcaudals 51. Dark olive-green above, each 

 scale tipped with reddish ; crown and a narrow vertebral line 

 somewhat darker; upper labials whitish, marked with olive-brown 

 in the upper corners ; beneath yellow, each ventral shield with a 

 blackish margin ; subcaudals nearly black. 



Total length 265 millim. ; tail 60. 



Braidwood, New South Wales. 



7. Denisonia signata. 



Alecto signata, Jan, Mev. 8f Mag. Zool. 1859, p. 128, an Icon. G^n. 



43, pi. vi. fig. 5 (1873). 

 Hoplocephalus signatus, Krefft, Sn. Austral, p. 64, pi. xii. fig. 5 



(1869). 



Eye longer than its distance from the mouth. Eostral broader 

 than deep, just visible from above; internasals about two thirds 

 the length of the praefrontals ; frontal once and two thirds to twice 

 as long as broad, not or but slightly broader than the supraocular, 

 as long as or a little longer than its distance from the end of the 

 snout, shorter than the parietals ; nasal entire, in contact with the 

 single praeocular ; 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 shorter 

 than the posterior. Scales in 17 rows. Ventrals 153-170 ; anal 

 divided ; subcaudals 41-56. Dark olive or black above ; head 



