219. DBNISONIA. 343 



B. Yellowish above, -without dark edges to the scales. 

 a. $ (V. 155; 0.25). Swan E. 



C. Brown above. {H. nigrieeps, Gthr.) 



a. c? (V. 150 ; 0. 30). ? Dr. Gunther [P.]. 



. „ „ (Type of H. nigrieeps.) 



b. 2 (V. 160 ; 0. 28). Champion Bay, Mr. Daboulay [0.]. 



N.^V. Australia 



c. $ (V. 156 ; C. 25). S. Australia. * Prof. Stirling [P.]. 



15. Denisonia nigrescens. 



Hoplocephalus nisrrescena, Gunth. Ann. 8r Mag. N. H. (S) ix. 1862, 

 p. 131, pi. ix. fig. 12 ; Krefftf Sn. Austral, p. 68, pi. vi. fig. 4 

 (1869). ^ ^ M> a , V 8 



assimilis, Macleay, Proc. Linn. Soe. N. S. W. x. 1885, p. 68. 



Eye as long as or slightly longer than its distance from the 

 mouth. Rostral twice as broad as deep, just visible from above ; 

 internasals not more than half as long as the prsefrontals ; frontal 

 once and one fifth to once and a half as long as broad, at least twice 

 as broad as 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 prseocular ; two (rarely one 

 or three) postoculars ; temporals 2+2, lower anterior wedged in 

 between the fifth and sixth labials ; six upper labials, third and 

 fourth entering the eye ; three or four lower labials in contact with 

 the anterior chin-shields, which are as long as or a little shorter 

 than the posterior. Scales in 15 rows. Ventrals 170-200 ; anal 

 entire; subcaudals 30-46. Dark olive-brown to black above, 

 yellowish below ; head black above and below ; ventrals and sub- 

 caudals sometimes dark-edged. 



Total length 545 millim. ; tail 75. 



New South Wales and Queensland. 



a. cJ (V.170; 0. 35). Sydney. G. Krefft, Esq. [P.]. 



(Type.) 



.b. $ (V. 186 ; C. 44). . Port Macquarie. G. Krefft, Esq. [P.]. 



c, d. § (V. 180 ; 0. 39) & New South Wales.. G. Krefft, Esq. [P.J. 



hgr. (V. 172; 0.36). 



e. 2 (V. 171 ; C. 39). Queensland. H.M:.S ' Challenger. 



/. Hgr. (V. 179 ; C. 34). Australia. . 



16. Denisonia nigrostriata. 



Hoplocephalus nigrostriatus, Krefft, Proc. Zool. Soc. 1864, p. 181, 

 and Sn. Austral, p. 70, pi. xii. fig. 3 (1869) ; F. Mull. Verh. Nat. 

 Ges. Basel, vii. 1885, p. 690. 



Alecto dorsalis, Jan, Icon. Gen. 44, pi. ii. fig. 1 (1873). 



Eye slightly longer than its distance from the mouth. Rostral 

 twice as broad as deep, just visible from above ; internasals half as 

 ■ long as the prsefrontals ; frontal a little longer than broad, twice as 



