Beak of the skull rather flat above, bent up on the edges in front of the notch, deep, broad behind, rather shorter than the length of brain-case. Teeth-line reaching nearly to the notch, large, three in an inch. First and second cervical vertebræ united by their bodies; the third, fourth, fifth, sixth, and seventh free.
Vertebræ 88:—C. 7. D. 14. L. and C. 67.
1. Lagenorhynchus albirostris.
B.M.
Lagenorhynchus albirostris, Gray, Cat. S. & W. p. 272. no. 8; Synops. Whales & Dolph. p. 8, t. 10. f. 2, t. 11 (skull); Gervais, Ostéogr. Cét. tab. 36. fig. 5.
The beak of the skull once and one-half as long as the width at the notch.
Inhab. North Sea, Yarmouth.
Tribe IV. PSEUDORCAINA.
Head rounded in front, very convex, not beaked. Teeth conical. Beak of the skull depressed, broad, scarcely so long as the brain-cavity.