336 COLTJBEID^. 



Trimesurus olivaceus, Gray, I. c. p. 443. 



Alecto coronata, Dum. [^ Bihr. vii. p. 1255, pi. Ixxvi. h. fig. 2 



(1854) ; Jan, Icon. Gen. 44, pi. i. fig. 3 (1873). 

 Hoplooephalus coronatus, Gunth. Cat. p. 215 (1858) ; Kreffl, Sn. 



Austral, p. 62, pi. vi. fig. 3 (1869). 



Eye longer than its distance from tte mouth. Rostral broader 

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

 length of the prsefrontals ; frontal once and two thirds to twice as 

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

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

 nasal entire, in contact with the single prseocular ; two postooulars ; 

 temporals 2 + 2, lower anterior wedged in between the fifth and 

 sixth upper labials, and sometimes nearly reaching the mouth; six 

 upper labials, third and fourth entering the eye ; three lower labials 

 in contact with the anterior chin-shields, which are shorter than 

 the posterior. Scales in 15 rows. Ventrals 138-151 ; anal entire; 

 subcaudals 38-51. Olive above, scales sometimes black -edged ; a 

 black streak on each side of the head, passing through the eye and 

 extending across the rostral, and a black cross-band on the nape ; 

 upper lip, below the black streak, yellowish, with some blackish 

 dots ; yellowish or pale olive beneath, ventrals olive at the base. 



Total length 480 millim. ; tail 95. 

 Western Australia and New South "Wales. 



a-b. d (V. 145, 146 ; Houtman's Abrolhos. Mr. GUbert [C.l. 

 C. 45, 47). 



0. d (V. 145 ; 0. 44). W. Australia. Sir J. Macgregor [P.]. 

 d. ? (V. 151 , 0. 41). W. Australia. G. F. Moore, Esq. rp.l. 

 e-f, ff-h. d (V. 145, W.Australia. 



141 ; C. 41, 51), $ 



(V. 140 ; 0. 42), & 



yg. (V. 144; 0. 43). 

 I 5 (V. 150 ; 0. 38). Swan River. Sir A. Smith [P.l. 



k. ? (V. 150 ; 0. 48). Sydney. G. Krefi't, Esq. [P.l. 



1. S (V. 138 ; 0. 49). New South Wales. Imperial In-stitute [P.]. 



3. Denisonia coronoides. 



Hoplocephalus coronoides, Giintk. Cat. p. 215 (1858) ; Krefft, Sn. 



Austral, p. 62, pi. xii. fig. 1 (1869) ; McCoy, Prodr. Zool. Vict, 



Dec. 2, p. 8, pi. xi. fig. 2 (1878). 

 Alecto labialis, Jun, Rev. ^ Mag. Zool. 1859, p. 128, and Icon. G^n. 



44, pi. i. fig. 1 (1873). 

 Hoplocephalus mastersii, Krefft, Proc. Zool. Soe. 1866, p. 370, and 



I. c. p. 63, pi. xii. fig. 6. 

 Alecto rhodogaster, Jan, Icon. 44, pi. ii. fig. 2. 

 Hoplocephalus labialis, F. Mull. Verh. Nat. Ges. Basel, vii. 1885, 



p. 690. 

 ■ collaris, Macleay, Proc. Linn. Soc. N.S. W. (2) i. 1887, p. 1111. 



Eye longer than its distance from the mouth. Rostral a little 

 broader than deep, just visible from above ; internasals about half 

 as long as the prsefrontals ; frontal twice to thrice as long as 

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



