Though M. van Beneden’s figure (copied in Cat. Seals & Whales, p. 347. f. 69) is so unlike the figure of Petrorhynchus capensis in the Cat. Seals & Whales, pp. 344 & 345. figs. 67 & 68, yet the cast of the beak of M. van Beneden’s specimen resembles the latter figure and our specimen.
Family 18. ZIPHIIDÆ.
Ziphiina, Gray, Cat. S. & W. pp. 327, 348.
Ziphiidæ, Gray, Synops. Whales & Dolph. p. 10.
Skull beaked. Maxillaries not dilated above. Intermaxillaries linear, rather swollen on the sides of the nostrils. Teeth on the sides of the lower jaw compressed. Cervical vertebræ more or less united into a consolidated mass.
* Symphysis of the lower jaw produced behind the teeth.
1. BERARDIUS.
Berardius, Gray, l. c. pp. 327, 348; Synops. Whales. & Dolph. p. 10.
Teeth 2·2, in the front of the sides of the lower jaw, conical, compressed. Lower jaw gradually tapering in front. Symphysis moderately long, as far from the hinder tooth as from the tip.