The Zoologist — March, 1873, 3431 



i. HyPeroodon. — Beak of the skull bent downwards ; crest of 

 the back of the beak sharp-edged above, as high as the occiput. — 

 Gray, Cat. Cet. B. M. t. 7, f. 1. 



1. Hijperoodon hutzkopf (the Goose Whale). — Inhabits Arctic 

 Seas, frequent in the British Seas, and ascending rivers. London 

 Bridge, 1837; Belfast, 1848 ; Frith of Forth, 1839. 



ii. Lagenocetus. — Beak of the skull straight; crest very large, 

 flattened, higher than the occiput. 



1. Lagenocetus latifrons, Gray, Zool. Ereb. & Terror, t. 24 (skull). 

 — Inhabits Arctic Seas ; occasionally on the coast of Scotland 

 and England. Frith of Forth, 1846 ; Orkneys (skull, Brit. Mus.) 

 Moreton Bay. Faeroe Islands (Mus. Edinb., 25 feet long). 



Family XII. Epiodontid^. — Blower lunate. Skull: beak simple; 

 maxillaries not dilated above; inlermaxillaries enlarged behind, 

 forming a more or less deep cavity round the nostrils. Teeth two 

 or four in front of the lower jaw, conical or cylindrical. Cervical 

 vertebrae : first, second and third united into one mass, which is 

 produced and truncated above ; the rest thin, free. 



i. Petrorhynchus. — Skull trigonal. Vomer swollen, forming 

 a large elongated callous tubercle between the intermaxillaries. 

 Intermaxillaries forming a deep basin round the nostrils. 



1. Petrorhynchus caviroslris. Ziphius caviroslris, Cuvier, Oss. 

 Foss. V. p. 320, t. xxvii. f. 3 (skull). Gervais, Zool. et Paleont. 

 Franc, t. 38, f. 2, t. 39, f. 1. Osteogr. Cet. t. xxi. f. 6—9. Fischer, 

 Ann. & Mag. Nat. Hist. 1866, xviii. p. 255. Hyperoodon de Corse, 

 Doumet, Bull. Soc. Cuvier, 1842, p. 207, t. 1, f. 1 (animal). 

 Hyperoodon Doumetei, Gray, Cat. Cet. Brit. Mus. p. 68. Petro- 

 rhynchus mediierraneus, Gray, Suppl. Cat. Seals & Whales, p. 98. 

 Specimen caught at sea at Shetland, 1870 (skull in Mus. Edinb.), 

 Turner. 



Epiodon Gervaisii, Heroodon Gervaisii, Davenoy. Epiodon 

 Heraultii, Gray. Delphinus Philippii, Cous. Erichs. Archiv. 

 Nat. 1846, p. 204, t. 4, f. 6, from Messina. Epiodon Des- 

 tnarestii, Gray, Suppl. Cat. Seals and Whales, p. 98 (from Z, cavi- 

 roslris — part), Gervais, Zool. et Pal6ont. Franc, t. 38, f. 1, t. 39, 

 f. 2-7. Osteogr. Cet. t. 21, f. 1—4, t. 22, f. 4—11. Differs in 

 having a small slender simple vomer. — Inhabits Mediterranean, 

 and I have seen an imperfect skull said to be brought from the 



