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Cynocephalidae (flying lemurs, colugos; cohort Unguiculata, order Dermoptera) A family of nocturnal, herbivorous, arboreal animals whose limbs support a patagium extending from the sides of the body to the paws and from the neck to the tip of the tail, by means of which they glide. The digits are flattened, and the soles of the paws form sucking discs for adhesion. The teeth are sharp, the lower incisors procumbent and each divided into many prongs, like a comb. The upper incisors are positioned at the sides of the jaw, leaving the front of the jaw toothless. The canines resemble premolars. There is one genus (Cynocephalus), and two species, distributed throughout south-east Asia.