FLYING COLUGO. 117 
rous veins and fibres dispersed through it. The 
whole upper side of the animal is generally of a deep 
ash-colour, most so in those which are full-grown, 
and blacker in the younger or less advanced spe- 
cimens : the back also, in the full-grown animals, 
is crossed transversly with blackish lines; to- 
wards the edges, is commonly a tinge of yellow- 
ish, and the whole under side, both of the body 
and membrane, is of a yellowish colour. The 
head is long : the mouth rather small ; the tongue, 
according to Dr. Pallas, fleshy, broad, rounded, 
attenuated on the edges, and ciliated with papillae, 
as in the Opossums : it is also slightly beset with 
papillae on its surface. There are no fore-teeth in 
the upper jaw, but in the lower are six, which are 
short, broad, and pretty deeply pectinated, so as 
to resemble little combs on their upper part: the 
canine teeth, or at least those which Dr. Pallas 
considers as such, are shaped somewhat like the pe- 
trifactions known by the name of glossopetrce^ be- 
ing triangular, very broad at their base, very short, 
sharp-pointed, and serrated : the grinders, or mo- 
lares, which are generally four, both above and 
below, are of an abrupt or truncated form, and 
roughened with conical protuberances. The ears 
are small, round, membranaceous, and marked 
internally by numerous semicircular transverse 
streaks, as in a bat. The legs are clothed with a 
soft yellow down : there are five toes on each foot, 
united by a common membrane, and terminating 
in large, thin, broad, very sharp crooked claws. 
