MACROPODIDA 165 
and less compressed than in the last subfamily; they are placed 
in precisely the same line with the molars. The crowns of the 
molars always have two prominent transverse ridges; and these 
teeth increase in size from before backwards, the fourth molar 
appearing very late. The fore limbs are small, with subequal toes 
armed with strong, moderately long, curved claws. Hind limbs 
very long and strongly made. Head small, with more or less 
elongated muzzle. Ears generally rather long and ovate. 
Upwards of forty-four existing species of this group have been 
described, and many attempts have been made to subdivide them into 
smaller groups or genera for the convenience of arrangement and 
description, but these have generally been based upon such trivial 
characters that it is preferable to speak of many of them as sections 
of the genus Macropus, reserving generic rank only to forms some- 
what aberrant in structure. According to this arrangement the 
genera will be as follows: 
Lagostrophus..—Represented only by the Banded Wallaby 
(L. fasciatus) of Western Australia, which presents the following 
distinctive features. Size small. Mufile naked. Hind feet covered 
with long bristly hairs, concealing the claws. Lower part of back 
marked by dark cross-bands. Skull with a narrow pointed muzzle 
and inflated auditory bulle ; symphysis of mandible firmly united. 
No canine. Upper incisive series meeting at a sharp angle, and 
diverging but slightly behind. First incisor smaller in section than 
either of the others and scarcely longer, bluntly pointed ; second 
with a flattened oral surface ; third smaller, similarly flattened, but 
with a groove on oral surface forming a notch at its postero- 
external angle. Fourth premolar short, with a distinct inner ledge. 
Molars as in Macropus. 
Dendrolagus.2—General proportions of limbs and body normal 
and unlike those of other members of the family. Muffle broad and 
only partly naked. Fur on nape, and sometimes on back, directed 
forwards. Fore limbs nearly as large as the hind; hind feet with 
the syndactylous second and third digits relatively large; claws of 
fourth and fifth hind digits curved like those of the manus. Tail 
very long, and thickly furred. Skull stout, with a short and wide 
muzzle; the posterior part of the palate fully ossified, and the 
auditory bulle not inflated. A small canine. Fourth premolar 
large, but much shorter antero-posteriorly than in the next genus ; 
molars as in the latter. 
This genus includes four species of Tree-Kangaroos, three of 
which occur in New Guinea, while D. dumholtz is found in North 
Queensland. They differ greatly from all the other forms in being 
chiefly arboreal in their habits, climbing with facility among the 
1 Thomas, Proc. Zool. Soc. 1886, p. 544. 
° Schlegel and Miiller, Verh. Nat. Ges. Nederland, p. 138 (1839-44). 
