cxxviii Cetacea. MAMMALIA. — -Cetacea. 
is admitted, on the evidence of a ramus of the under 
jaw, in tlie Museum, Rutgers College, whicli is of a 
peculiar form, and closely resembles the figure given 
by Lilljebourg of that portion of this rare species.” — 
Proc. Acad. Nat. Sci., FJdla.. 1868, p. 194. 
FAMir.Y— RHYS ALID YC. 
Finner Whales. 
This family has, at various times, borne the title 
Physalina and Plujsalinidm. Gray, who instituted 
these names, has settled upon the present — Physa- 
lidcB. 'I’he dorsal fin stands high, erect, compressed 
and sickle-shaped, at about three-fourths the entire 
length from the nose. 'I’he pectoral fin is moderate 
in size, with four short fingers of four or six pha- 
langes. The vertebral column has fifty-five or sixty- 
four blocks. 'I’he cervical vertebrae are not joined, 
or anchylosed. 'I'he neural canal is oblong and trans- 
verse. 
'I'here are some forms of this family with the vertebnc 
numbering sixty or sixty-four, and the first rib single- 
headed. 'I’he following are enumerated as such : 
Benedenia. — Oray. 
'These Whales are characterized by having the 
rostrum of the skull narrow, attenuated, with straight- 
slanting edges; second cervical vertebra, with two 
short truncated lateral processes ; the first rib, sin- 
gle-headed. 'The genus takes name from the natural- 
ist, Van Beneden. — Gray. 
KNOX’S FINNER WHALE [Benedenia hioxii, 
Gray). — 'This is also called B. boops by Gray, in a 
irrevious paper. Its habitat is the North Sea and 
coast of Wales. 
PiiYSAiiUS. — Gi'ay. 
'The rostrum of the skull in this, the typical genus of 
the Physalidm, is narrow, attenuated, with straight- 
sloping sides. 'I'he second vertebra of the cervical 
has a broad lateral process, with a large perforation 
at the base. 'J’he first rib is single-headed. 'The 
sternum is trifoliate, with a long, slender, hind pro- 
cess. 'The fingers are shorter than the fore-arm 
bones. 'I'he scapula is very broad ; the acromion 
and coracoid process are well developed. 
THE ANCIENT FINNER WHALE [Physalus an- 
tiquoruin, Gray ). — 'I’he term ancient, or anticpiated, 
which we apply to this Whale, after the specific name, 
is probably as good as another. 'I'here is no record 
of the reasons for this designation. A^an Beneden 
terms it Balccnoi)tera musculus, and its habitat is 
recorded as the North Sea, Greenland, Hampshire, 
etc. 'I'he ribs of this species are mentioned as four- 
teen in number on each side. 
DUGUID’S FINNER WHALE (Physalus duguidii, 
Gray). — 'I'he ribs are numbered as fifteen on each 
side, and the habitat is the North Sea and Orkney 
islands. 'I'his and the species preceding has the 
lateral rings of the second cervical vertebra as long 
as the diameter of the body of the vertebrae. 
THE PATAGONIAN FINNER WHALE (Physalus 
2>atachonicus, Gray ). — 'I’his AVhale is said to inhabit 
the River Plata, South America. In this and the 
next succeed! iig species, the lateral rings of the cer- 
vical vertebrae are shorter than the diameter of the 
bodies of the vertebrae. 
THE BRAZIL FINNER WHALE (Physalus bra- 
ziliensis, Gray ). — 'Phis was formerly Balaenoptera of 
Gray, recorded as such in the Zoology of the Erebus 
and Terror. Its habitat is Bahia, South America. 
Over the name of Mr. F;. Hartt, Gray quotes the 
following: “ 'I’he first Whales appear in the Abrol- 
hos waters at about the end of May, and they stay 
until October. 'I’he females often bring the young 
with them, and appear to seek the shelter of the 
reefs.” 
CuviERius — Gray. 
'This genus, named for the eminent naturalist, has 
the rostrum of the skull broad, the outer sides curved, 
especially in front; the second cervical vertebra with 
two short, thick, lateral processes. 'I'he first rib is 
single-headed. 'The sternum is oblong, ovate and 
transverse. 'I'he hands are elongate ; fingers slender, 
the second finger much longer than the fore-arm 
bone. 'I'he scapula has a broad acromion and a rudi- 
mentary coracoid. 
SIBB ALL’S FINNER WHALE (Cmierius sibbaldii, 
Gray ). — 'This is the G. latirostris of Gray, in a for- 
mer paper, and Physalus sibbaldii of same author; 
Balaenoptera of Van Beneden, and B. carolinae and 
B. musculus of others. It is also called the Gray 
Fin Whale by 'Turner. Its habitat is given as the 
Noi'th Sea. Gray says : -‘'The Great Northern Ror- 
qual of Knox is probably of this species. Its skel- 
eton is in the I’ldinburgh Museum.” 
Rudolphius. — Gi’ay. 
'I’his is the genus Sibbaldius of Lilljebourg. Its 
dorsal fin is compressed, falcate, two-thirds the entire 
length from the nose. Ribs 13, 13 ; first pair short, 
dilated at the external end. 'The sternum is elongate, 
not narrow, at the posterior lobe. 'The fingers are 
elongate, the second finger rather shorter than the 
fore-arm bone. 'The scapula is very broad, with a 
large, broad acromion process and a moderate cora- 
coid one. 
THE BROAD-HEADED FINNER WHALE (Rudol- 
jyhius laticeqis, Gray). — 'This is named Sibbaldius lati- 
ceps by Gray, in a former paper ; and Balaenoptera 
laticeps by A^an Beneden. Habitat, North Sea. 'The 
nose of the skull is more than twice the length of the 
brain cavity from the nasal bones. 
Sibbaldius. — Gray. 
'This is Flowerius of Lilljebourg. 'The dorsal tin 
is very small, far behind, and placed on a thick prom- 
inence. 'I’he I’ibs are 14, 14 ; the first short, with 
sternal end very broad and deeply notched. 'The 
sternum is trifoliate, with a short, broad hinder lobe., 
'The scapula is broad, with a very long acromion and 
short, slender coracoid process. 
THE NORTHERN FINNER WHALE (Sibbaldius 
borealis, Gray). — Flowerius gigas of Lilljebourg. 
Habitat, North Sea. Gray gives the following note 
