Colugo Flying Lemur, or Cat Monkey, the common name of animals of the family galeopi-thecidae, elevated into the order pteropleura or dermoptera by some authors; they evidently constitute the connecting link between the monkeys and the bats. In the single genus galeopithecus (Pall.) the dental formula, according to Owen, is: incisors 2/3 - 2/3 canines 1-1/1-1 premolars 2/2-2/2, and molars 3/3-3/3 the feet are all five-toed, without opposable thumbs, united by a small membrane, armed with claws, and adapted for climbing. The body is surrounded by a hairy lateral membrane, extending from the sides of the neck to the base of the feet, embracing the wrists, and continued between the legs, involving the tail as in many bats; this membrane, like that of the flying squirrel, serves as a parachute to sustain the animal in its astonishing leaps from tree to tree. The edges of the lower incisors are serrated like the teeth of a comb; the eyes large and prominent, the ears moderate; there are two pairs of pectoral mammae.

They are nocturnal animals, passing the day suspended from trees by the hind claws like bats; they are very active at night, climbing with facility, and springing from tree to tree for a distance of 100 yards; the females carry the young in the fold of abdominal integument, when travelling among the trees; their food consists principally of fruits, insects, small birds, and eggs; their movements on the ground are rather awkward. The largest species {G. variegatus, Geoffr.) is about the size of a cat, but slimmer; the color varies from light gray to russet, spotted and striped with black and light colors. All the species live in the East Indian archipelago. Though emitting a disagreeable odor, the flesh is considered palatable by the natives.