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 papillee, 

 as in the Opossums : it is also slightly beset with 

 papillas 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. 



