Head blunt: teeth about nine on each side above and below; short, with obtuse summits.
D. leucas, Desm. Mammal, p. 519. Delphinaptera albicans, Flem. Brit. An. p. 36. Beluga, Barclay and Neill in Wern. Mem. vol. in. p. 371. pl. 17. Scoresby, Arct. Keg. vol. I. p. 500. pl. 14.
Entire length from twelve to eighteen feet.
Body thick in the middle, somewhat tapering towards each extremity, but more especially towards the tail: head small, blunt, and round; the forehead rising abruptly: eyes and mouth small: jaws equal: teeth in the adult state about nine on each side above and below, short, straight, slightly compressed, with obtuse summits; those in the upper jaw falling in advanced life: a longitudinal ridge on the back supplying the place of the dorsal fin: pectorals short, broad, and oval. Skin smooth : colour wholly white; sometimes with a tinge of yellow.
A native of high Northern latitudes, where it is found in herds of thirty or forty together. Must be considered as a very rare visitant of the British seas. The individual described by Mr. Neill I.e. was taken in the Frith of Forth in June 1815.