Physalus Sibbaldii, Gray, l. c. pp. 160 (fig. 36), 380.
Balænoptera Sibbaldii, Van Beneden, Ostéogr. Cét. t. 12 & t. 13. figs. 25-34.
Balænoptera carolinæ, Malm, Monog. Illust. t. 44.
Balænoptera musculus, Sars, Vid. Selsk. Forhand. 1865, t. 1, 2, & 3.
“Steypireyör,” Reinhardt, Vidensk. Meddel. 1867; Ann. N. Hist. 1868.
The Grey Fin Whale, Turner, Proc. Roy. Soc. Edin. 1869, p. 34 (from Londonderry).
Inhab. North Sea. Mus. Hull.
The great northern Rorqual of Knox probably belongs to this species. Its skeleton is in the Edinburgh Museum.
** Vertebræ 58-60. First and second ribs double-headed (cf. [p. 52]); second cervical vertebræ with a broad lateral process, perforated at the base. Lower jaw compressed, with distinct coronoid process.—Sibbaldius, Gray, l. c. pp. 114, 169; Synops. Whales & Dolph. p. 3.