MARSUPIALIA. 143 
Ph. Cookii, Cook’s last Voy., pl. viii. (The Phalanger of Cook). 
Less than a cat; brown above, white underneath; head and flanks 
red; posterior third of the tail white. 
Ph. Bougainvillii. (The Phalanger of Bougainville). Size of a 
squirrel; ash-coloured above, white underneath; the posterior half 
of the tail black; posterior half of the ear white.* 
Petavurus, Shaw.—Puatranaista, Lllig. 
The Flying Phalangers have the skin of the flanks more or less ex- 
tended between the legs, like the Flying Squirrels among the Rodentia, 
which enables them to sustain themselves for a few moments in the air, 
and make greater leaps. They also are only found in New Holland. - 
Some of the species have inferior canines, but they are very small. 
Their superior canines, and their three first molars, above and below, are 
very pointed; each of their back molars has four points.} 
Ph. pygmea; Did. pygymea, Shaw, Gen. Zool. pl. 114; Schreb. 
CLXIV, A. (The Flying Dwarf Phalanger). Of the colour and 
nearly the size of a mouse; the hairs of the tail regularly arranged 
on its two sides like the barbs of a quill. 
Other species have no inferior canini, while the superior ones are very 
small. Their four back molars present four points, but they are slightly 
curved into a crescent, which is very nearly the form of those of the Ru- 
minantia. In the front there are two above and one below, less compli- 
cated. By this structure they are rendered still more frugiverous than all 
the preceding species. 
Ph. petaurus, Shaw, Gen. Zool., pl. cxii; White, Voy. 288. (The 
Great Flying Phalanger). Resembles the Taguan and the Galeo- 
pithicus in size; its fur is soft and close; its tail long and flattened ; 
brownish-black above, white beneath. They are of various shades 
of brown; some are variegated, and others perfectly white. 
Ph. sciurea, Shaw, pl. cxiii, 3. (The Bordered Flying Phalan- 
ger). Size of the brown rat; ash-coloured above, white beneath; a 
brown line commencing on the chanfrin and running along the 
back; edges of the lateral membrane brown; tail tufted, and of the 
length of the body; its posterior portion black. From the islands 
near New Guinea. 
P. peronii, Desm. (The Hairy-footed Flying Phalanger). A 
reddish-grey; front of the ears and under part of the body whitish; 
toes very hairy and brown; tail black, longer than the body, and 
white at the end. 
Ph. macroura, Shaw, pl. cxiii, f, 2. (The Long-tailed Flying 
Phalanger). A deep brown above, white beneath; size of the brown 
rat; tail slender, about half as long again as the body. 
Our third subdivision has the incisors and superior canines and the two 
* A new species brought to France by M. de Bougainville from his last expedition. 
¢ Itis of this first division that Desmarets has made his genus ACROBATE. 
VOL. I. I 
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