1877.] ON REPTILES ETC. FROM DUKE-OF-YORK ISLAND. 127 
The third upper incisor is but little longer than the second, and 
has the external fold close to its posterior border. The milk-molars 
are still retained ; but the premolar, when exposed in the maxillary, 
is found to be only slightly longer than the first true molar, the 
former measuring ‘27, and the latter -22 of an inch. 
This interesting Kangaroo bears a striking superficial likeness to 
Dorcopsis luctuosa (D’ Alb.)—a resemblance which, along with its 
generally sad-coloured coat, suggests the specific name proposed. 
Even externally, however, it may be at once distinguished by the 
direction of the hair of the nape, the nearly naked scaly tail, and the 
uniform brown of the upper parts, while its dentition at once shows 
it to be not a Dorcopsis but a true Macropus. 
When Mr. Garrod first clearly established the distinctions between 
Dendrolagus, Dorcopsis and Macropus', only one species of the 
last genus was known to inhabit the Austro-Malayan Subregion, 
namely M. bruni (Schreb.), from the Aru and Ké Islands. Since 
then two species have been described from New Guinea—JZ. papu- 
anus by Dr. Peters, from the eastern extremity of the island’, and 
Halmaturus crassipes by Mr. E. Pierson Ramsay, from Port 
Moresby*. From all of these, as well as from all the Australian 
species, M. /ugens appears to be perfectly distinct. In the character 
of the covering of the tail it most resembles M. papuanus, from 
which, however, it differs in its entirely bare muffle, and in the pro- 
portions of its upper incisors, as well as in coloration. 
I trust that Mr. Brown may soon be able to procure fully adult 
examples of this Kangaroo, and also to give us information as to 
the exact habitat of this and the other species contained in his 
collection. 
4. On a Collection of Reptiles and Fishes from Duke-of-York 
Island, New Ireland, and New Britain. By Dr. AtBurt 
Guntuer, V.P.Z.S. 
[Received Feb. 20, 1877.] 
(Plates XX. & XXI.) 
A collection of Reptiles made by the Rev. G. Brown on Duke-of- 
York Island forms a valuable contribution to the very scanty know- 
ledge we possess at present of the Reptiles of New Ireland and New 
Britain. Indeed, since the visit of the French naturalists Lesson 
and Garnot, those islands have been entirely neglected, only a few 
species having reached European collections from the neighbouring 
Solomon Islands. The species forming this first collection of Mr. 
Brown, are not sufficient in number to base upon them a more pre- 
cise conclusion than that arrived at by Mr. Wallace, who appears to 
1 “Qn the Kangaroo called Halmaturus luctuosus by D’Albertis and its 
Affinities,” P. Z. 8. 1875, pp. 48-59, pls. vii.—ix. 
2 Ann. Mus. Ciy. Genova, vii. p. 544 (1875). 
® Proc, Linn. Soc. New 8. Wales, i. p. 162 (1876). 
