1864.] DR. J. E. GRAY ON BRITISH CETACEA. 211 
Hab. Estuary of the Dee (1863, Thos. Moore). Skeleton in 
Derby Museum, Liverpool; a young female 31 feet long. 
The atlas is very thick; the second cervical nearly as thick as 
the atlas, with the upper and lower lateral processes separate, short ; 
the fifth, sixth, and seventh cervical all similar to the third and 
fourth; the fifth thin, and the seventh the thickest. The second 
cervical vertebra has two short broad thick processes, with a rounded 
interrupted perforation between them; the third and fourth have a 
thin long shelving-down upper, and a short straight lower process ; 
the fifth, sixth, and seventh are similar, but have only an upper lateral 
process ; the fifth is the thinnest, and the seventh the thickest. The 
arms were 10 feet long; the cartilage between the bones of the arms 
and the fingers is nearly half as long as the arm-bones; there are 
four bones immersed in it, small, variously shaped and sized; the 
cartilage between the elongated finger-bones is nearly half as long as 
the phalanges; the phalanges nearly all of the same oblong shape, 
and subsymmetrical in form. The bones of the skull are so fragile as 
scarcely to bear their own weight. 
Moore, in the lithographic ‘ Naturalist’s Scrap-Book’ (printed in 
Liverpool) for July 17, 1863, observes, “It yielded no oil; the blub- 
ber was like a cow’s udder, as exposed in the market for sale in 
Liverpool. Length 31 feet 4 inches. Bought by a manufacturer of 
oil and grease, who made nothing of it.’ ‘All black; belly mot- 
tled and streaked with white; pectoral fins milk-white, with a black 
blotch here and there. Baleen very closely packed together, thirty- 
eight blades in a foot; the largest blade was nearly 2 feet long.’ 
“Female: length 31:4, of gape 8:0, from snout to eye 8:0, of eye 
0°3, from snout to base of pectoral 11:0, of pectoral 10-0; extreme 
width of tail 11-0, from snout to beginning of hump 18:0, of hump 
3°3, from snout to cloaca 21:0.” ‘* Stomach contained shrimps.” 
Eschricht figures a new-born specimen of this species from Green- 
land, which was 35 inches long ; it has several series of bristles on 
the lips, parallel with the gape (see K. Dansk. Vid. Selsk. xi. t. 3. 
f. 1, and the teeth as seen in the jaws t. 4). 
II. Dorsal fin erect, compressed, falcate. Pectoral fin moderate, 
about one-eighth of the entire length of the animal ; fingers 
short; phalanges few; scapula broad, with a long coracoid 
process ; the neural arch broad, low, much broader than high. 
PHYSALINA. 
a. The dorsal fin about two-thirds the entire length from the snout ; 
cervical vertebrae free. 
2. BENEDENIA. 
Second cervical vertebra with two short truncated lateral pro- 
cesses ; first rib simple-headed, with a compressed internal process. 
Physalus, § Rorqualus, Gray, Cat. Cet. 
Pectoral fins moderate; dorsal ‘fin faleate; skull rather broad ; 
