Prof. F. M‘Coy on a new Genus of Phalanger. 287 
XXXVI.—On a new Genus of Phalanger. By FrepErick 
M‘Coy, Professor of Natural Science in the Melbourne Uni- 
versity, and Director of the National Museum of Victoria. 
[Plate VI. | 
GyMNOBELIDEUS (M‘Coy), nov. gen. 
Teeth and general form of Belideus, but destitute of the lateral 
cloak-like parachute or flank-membrane, and having on the fore 
feet the inner finger or thumb shortest, the second longer, the 
third longer than the second, the fourth longest, the fifth or 
outer toe shorter than the third, but longer than the second. 
On the hind feet the inner toe or thumb is succeeded by two of 
nearly equal size, more slender and shorter than the others, and 
united together as far as the base of the last joint. The thumbs 
of the hind feet are without nails, and the claws of all the other 
toes are small, and exceeded in length by the prominent wrinkled 
pads on the underside. The ears are large, semielliptical, and 
nearly naked towards the tips. Dental formula :—incisors 3, 
canines +, premolars a molars ; = 40. 
In general appearance this curious animal is intermediate be- 
tween Belideus and Phascogale ; but its nearest affinity is with the 
former, from which the absence of the flank-membrane and the 
different form of the feet distinguish it. There is only one species 
known, which occurs in the scrub on the banks of the Bass River, 
in Victoria. I name it after the skilful taxidermist of our Public 
Museum, in which specimens of both sexes are preserved. 
Gymnobelideus Leadbeatert (M‘Coy). 
Upper surface brownish grey, with a blackish dusky streak 
from the top of the head along the back to the sacrum; there 
is a dark patch under the base of the ear, and a fainter one be- 
fore and behind the eye. Under surface dull yellowish; tail 
rather lighter than the back, and lightest at the tip. Head like 
that of Belideus breviceps, but with a slightly sharper snout. 
The tail has the fur no longer on the basal half than on the 
back, the apical third of the length being gradually more bushy, 
from the greater length of the hair. Ears brown. The fur of 
the body is soft and dense, the hairs grey at the base, and 
blackish and tipped with brownish white at the end; the fur of 
the tail is brownish throughout. Teeth: anterior incisor above 
more than twice the length of the others, and rather broader 
near the edge than at the base; second incisor shorter than 
the third, which is triangular; space between third incisor and 
canine equal to length of second incisor ; canine conical, shorter 
than the first, but longer than the third incisor; space between 
