. CETACEA. ya; 
of these bones depended on the mobility of the neck of the 
different species, fitting it for their different habit and manner 
of life, indicated by the size of the fins and other external cha- 
-_racters. 
_ Professor Eschricht (in Forhandl. Sekand. Naturf. Kiobenh. 
1847, 8vo, 1849, p. 103) has published a paper on the geogra- 
phical distribution of some of the Northern Whales, with a map, 
by which it appears that Balena mysticetus in Baftin’s Bay lives 
from latitude 65° to 69° in December to June, and in July and 
August ascends to 77°. The Finnolic live in 76° in the summer, 
on the coast, North Greenland, and 69° in South Greenland. The 
_ Keporkak 76° m North Greenland, and 62° in South Greenland. 
_ The anatomy of these animals, and especially a description of 
their bones, have been given in Albers. Anat. Comp.t. 1; Cam- 
per, Cetacea, t.11 and 12; Rudolphi, Berl. Abhand. 1820, t. 14; 
Cuv. Oss. Foss. v. 564. t. 26. f.5; M. Ravin, Ann. Sci. Nai.; 
Van Breda, Van der Linden, and J. Dubar, in separate pam- 
phiets on the specimen cast ashore at Ostend, which was exhi- 
hited in London some years ago. 
_ Cuvier (Oss. Foss. v. 264) figures the skull of a specimen de- 
scribed by Lacepéde, from the Mediterranean, under the name of 
Rorqual de la Méditerranée (t. 26. f. 5), and he gives a copy 
of the head of the skeleton of Balena rostrata of Rudolphi, Ber- 
lin Abhand. 1820, t. 1, 2, 3, 4, under the name of Rorqual du 
Nord, Oss. Foss. v. t. 26. f. 6, and points out the differences be- 
tween them ; but the skull of the various specimens which I have 
examined did not offer any striking characters to separate the 
Species. 
 Polach (New Zealand, ii. 407) describes these whales as having 
three fins on the back; this is probably only a false translation of 
_Ray’s B. tripennis, referring to it havmg a dorsal as well as two 
dectoral fins. 
__ O. Fabricius (Fauna Grenlandica, 36) describes B. Boops with 
the blower ‘on a common tubercle, and covered by a common 
valve ! 
2. MecapTerRaA. Hump-BACKED WHALES. 
_ Head broad, moderate, flattened. Throat and chest with deep 
longitudinal folds. Dorsal fins low or tuberous, rather behind 
the middle of the body. The pectoral very large, 4 the entire 
length of the animal, as long as the head, consisting of only 
four fingers. The eyes rather above the angle of the. mouth. 
The navel is rather before the front edge, the male organs under 
the back edge of the dorsal, and the vent rather nearer the tail, 
and the female organs are rather behind the back edge of the 
dorsal, with the vent at its hinder end. 
te 
hen 
