* Beak of skull twice as long as the brain-case. Teeth 55/55 or 56/56.
1. Delphinus longirostris.
B.M.
Delphinus longirostris, Gray, l. c. p. 241. no. 2; Synops. Whales & Dolph. p. 5.
Inhab. Southern Ocean; Cape of Good Hope; Japan; Malabar.
** Beak of skull once and a half the length of the brain-case. Teeth 45/45 to 50/50.
2. Delphinus delphis.
B.M.
Delphinus delphis, Gray, l. c. pp. 242 (n. 3), 396; Synops. Whales & Dolph. p. 5; Reinhardt, Vidensk. Meddel. 1866, t. 1.