336 COLUBRID. 
Trimesurus olivaceus, Gray, l. c. p. 443. 
Alecto coronata, Dum. § Bibr. vii. p. 1255, pl. Ixxvi. b. fig. 2 
(1854); Jan, Icon. Gén. 44, pl. i. fig. 3 (1873). 
ge Rog coronatus, Giinth. Cat. p, 215 (1858); Krefft, Sn. 
ustral. p. 62, pl. yi. fig. 3 (1869). 
Eye longer than its distance from the mouth. Rostral broader 
than deep, just visible from above; internasals about two thirds the 
length of the prefrontals ; 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 preocular ; two postoculars ; 
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. g (V. 145, 146; Houtman’s Abrolhos, Mr. Gilbert [C.]. 
C, 45, 47). 
ce. do (V. 145; 0.44). W. Australia. Sir J. Macgregor [P.]. 
d, 9 (V.151, C.41). W. Australia. G. F. Moore, Esq. [P.]. 
e-f, g-h. gb (V. 145, - W. Australia. 
141; C. 41, 51), 2 
(V. 140; C. 42), & 
g. (V. 144; C. 43). 
7. 2 (V. 150; C. 38). Swan River. Sir A. Smith FS 
k. 9 (V. 150; C. 48). Sydney, « G. Krefft, Esq. [P.]. 
l. go (V. 188; C. 49). ew South Wales. Imperial] Institute [ P.}. 
3. Denisonia coronoides. 
Hoplocephalus coronoides, Giinth. Cat. p, 215 (1858); Krefft, Sn. 
Austral. p. 62, pl. xii. fig. 1 (1869); MeCoy, Prodr. Zool. Viet., 
Dec. 2, p. 8, pl. xi. fig. 2 (1878). 
Alecto labialis, Jan, Rev. § Mag. Zool, 1859, p. 128, and Icon, Gén. 
44, pl. i. fig. 1 (1873). 
Hoplocephalus mastersii, Krefft, Proc. Zool. Soc. 1866, p. 370, and 
Lc. p. 63, pl. xii. fig. 6. 
Alecto rhodogaster, Jan, Icon. 44, pl. ii. fg. 2. 
Hoplocephalus labialis, F. Miill. 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 prefrontals; frontal twice to thrice as long as 
broad, not broader than the supraocular, as long as or longer than 
ae 
