Abstract
Among dental anomalies in the leporids, malformation of the incisors has been mentioned in the literature relatively often (Christiansen, Skand. Vet. Tidskr., 34: 449–466, 1944, abstract by J. Egehoj in Biol. Abst., 20:156, abstract no. 1284, 1946; Gregory, Jour. Mamm., 34: 393–394, 1953; McIntosh, Trans. Roy. Soc. Edinb., 56: 333–407, 1930), but the reported occurrence of extra teeth is less common. Darwin (the variation of animals and plants under domestication. Vol. 1: 150, 1868) reported the case of a rabbit of the domestic lopeared variety in which one extra cheek tooth was present “on each side of the upper jaw between the molars and premolars; but these two teeth did not correspond in size.” Some other instances of extra teeth, either incisors or cheek-teeth, have been recorded (Major, Proc. Zool. Soc. London, 1: 416–417, 1904). To these reports, I add an instance of extra cheek-teeth in a wild hare, …
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