Supplement to the catalogue of seals and whales in the British Museum

by John Edward Gray

Delphinapterus, Lucas, Vidensk. Selsk. Skr. Række 5, Band ix. tab. 8 (skull and teeth, showing how they are worn).

Inhab. North Sea, mouths of rivers.

1. Beluga rhinodon, Cope, Proc. Acad. Nat. Sci. Philad. 1865, p. 5, 1869, p. 13, fig. 1.

Inhab. Arctic seas.

2. Beluga declivis, Cope, Proc. Acad. Nat. Sci. Philad. 1865, p. 5, 1869, p. 14.

Inhab. Arctic seas.

3. Beluga angustata, Cope, Proc. Acad. Nat. Sci. Philad. 1869, p. 20, figs. 2 & 3.

Beluga concreta, Cope, Proc. Acad. Nat. Sci. Philad. 1865, p. 5.

Inhab. Arctic seas.

These are probably varieties of B. catodon, showing that the attachment of the cervical vertebræ, the number of ribs, and the form of the acromion are liable to vary.