240 DR. J. E. GRAY ON BRITISH CETACEA. [May 24, 
ginal prominence (Cuvier, Oss. Foss. 318, t. 24. f. 23). The bones 
of the arm short ; fingers short (Cuv. 318). The opening of the 
blower is transverse, linear, slightly convex, forward in the middle, and 
slightly bent back at the ends; and this explains, I suspect, the dif- 
ferent accounts that authors have given of this part, some looking at 
the middle and the others at the ends only. 
It is curious that both O. Fab. and Turton should have reversed 
the head, or, by misprint, that each should state, in two places in 
the text, the teeth to be in the upper jaw; and Illiger’s genus is 
founded on this error of the press. 
Hypreropon BurzKorr. The Bottlehead. 
The Bottle-head or Flounder Whale, Dale, Hist. Harwich, 411, 
t. 149. 
Beaked Whale, Penn. Brit. Zool. t. 
Delphinus bidens, Turton, B. Fauna, 17. 
Hyperoodon bidens, Flem. B. A. 36 ; Jenyns, Man. 44; Thomp- 
son, Ann. & Mag. N. H. 1854, xiv. 347. 
Bottle-nose Whale of Dale, Hunter, Phil. Trans. Ixxvii. t. 19. 
Delphinus hunteri, Desm. Mamm. 520. 
Cetodiodon hunteri, Jacob, Dublin Phil. Journ. 1825. 
Hyperoodon, Thompson, Mag. N. H. 1838, 221. 
H. butzkopf,W.Thompson, Ann. & Mag. N.H.1846, p.150, t.4 3, 
iv. 375; Gray, P. Z. S. 1862; Bell, B. Quad. 492. fig., 493. fig., 
496. fig. 
ieee hyperoodon, Schlegel, de Dieren, 94, t. 18. 
Hyperodon borealis, Nilsson, Scand. Fauna, 622. 
Hyperoodon butzkopf et H. rostratum, Gray, Cat. Cetac. 63, 64. 
Whale, Mlustrated London News, 18 Nov. 1860. 
Nebhvalen, Eschricht, K. Dansk. Vid. Selsk. xi. 327, 328. fig., 
with details of anatomy. 
Hyperodon hunteri, Gray, Ann. & Mag. N. H. 
Hyperoodon rostratum, Wesmael, Nouv. Mém. Acad. Roy. Brux- 
elles, xiii. t. 1, 2 (very good). 
Hab. British Seas, ascending rivers. Harwich (Dale). Mouth of the 
Thames, above London Bridge, 1783 (Hunter) ; skeleton, Mus. Coll. 
Surgeons. Whitstable (Beardsworth) ; skull and bones in British 
Museum. The Humber, near Hull, 1837 (Thompson) ; skeleton in 
Mus. Hull Phil. Soc. Mouth of the Dee; skeleton, Mus. Royal 
Institution, Liverpool. Dublin (Jacod) ; skeleton, Mus. Coll. Surg. 
Skull, Royal Dublin Society and Museum School of Anatomy. Bel- 
fast Lough, 29 Oct. 1845; skeleton, in Belfast Museum, of male 
20 feet long (Ann. & Mag. N. H. 1846, xvii. 151), with four teeth 
in lower. Frith of Forth, 29 Oct. 1839 ; skeleton in Edinb. Uni- 
versity Museum: female 283 feet long, in company with young suc- 
kling female 9 feet long. Coast of Holland (Wesmael, 1. c.). 
I formerly thought there might be more than one British species 
of this genus, the figures and the description being so different ; but 
T have not been able to find any specimen to establish this idea. 
