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bloodsucking habit; but its use appears to be merely that of scooping out the soft insides of fruits, upon which the Bat mainly lives. The incisors are only one on each side of the upper jaw. The really bloodsucking Bats of this family belong to the genera Desmodus and Diphylla. The former is the Vampire, the species being known as Desmodus rufus. These Bats have no tail; there is no true molar tooth; the canines are large, and the single pair of upper incisors quite caniniform, and very sharp and strong. These are the main teeth for aggression. In accordance with its diet of blood, the Vampire has a peculiarly modified intestine. The gullet is provided with a bore so small that nothing but fluid food could pass down it; the stomach is intestiniform in shape.