flying lemur

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Either of two arboreal mammals, Cynocephalus volans of the Philippines or C. variegatus of southeast Asia, that are sustained in gliding leaps by a wide, fur-covered membrane extending from each side of the body. Also called colugo.

Century Dictionary and Cyclopedia

1. n. A mammal of the order Insectivora and family Galeopithecidæ, provided with an extension of the skin like a parachute, by means of which it makes flying leaps from tree to tree. Its resemblance to a lemur is such that it was formerly referred to the order Primates. It has, however, no special affinities with the lemurs. Galeopithecus volans is a common species of Borneo, Sumatra, Malacca, etc. Also called flying-cat. See cut under Galeopithecus.

Wiktionary

1. n. the colugo

GNU Webster's 1913

1. adj. (Zoöl.) See Colugo.
2. (Zoöl.) either of two nocturnal lemurlike mammals inhabiting the East Indies (Cynocephalus variegatus) or the Phillipines (Cynocephalus volans) having broad folds of skin between the fore and hind limbs on both sides of the body allowing them to make long gliding leaps; they have been classed in the separate order Dermoptera. They are arboreal and have become rare.

WordNet 3.0

1. n. arboreal nocturnal mammal of southeast Asia and the Philippines resembling a lemur and having a fold of skin on each side from neck to tail that is used for long gliding leaps