302 Zoological Society. 
The distance from the end of the under jaw to the origin of the 
pectoral fin ten feet nine inches ; the length of the fin five feet six 
inches; the breadth eighteen inches. ‘The dorsal fin small, of car- 
tilage only, conical, the basal length eighteen inches, the elevation 
twelve inches ; placed eleven feet in advance of the tail. | 
The subcutaneous layer of fat varied in thickness from three to 
five inches. 
The figure at the bottom of page 521 in Mr. Bell’s History of 
British Mammalia and Cetacea, was referred to as a very good re- 
presentation. 
The dimensions of the skeleton are as follows :— 
Whole length ........ 40 feet. 
PAGO ix. ke a ee ions 10 — 
The vertebre are sixty in number ; viz. seven cervical, fifteen dor- 
sal, sixteen lumbar, fifteen caudal, and seven caudal bones. Of ribs 
there are fourteen, the first of which is double-headed, and is at- 
tached to the two first dorsal vertebre ; each of the other ribs is at- 
tached to a single vertebra, and has a single head; the dorsal ver- 
tebre, therefore, exceed the ribs in number by one. 
The rest of the details of the bony fabric, as regards the pectoral 
fins, &c., correspond precisely with Dewhurst’s plate and description 
of the Ostend specimen, allowing of course for the inferior size of 
the present animal. | 
Mr. Yarrell exhibited, at the request of G. 'T. Fox, Esq., of Dur- - 
ham, a specimen of a beautiful spiny Lizard, from Texas,—the 
Agama cornuta of Harlan, Phrynosoma Bufonium and Phrynocephalus 
Bufonius of other modern authors. The specimen on which Dr. 
Harlan drew up his description was trom the west of the Rocky 
Mountain Range. 
A paper was then read, by Mr. Blyth, entitled ‘A Summary 
Monograph of the species of the genus Ovis,” in which the author 
recognized nine species, besides indicating others as more or less 
doubtful. 
The Argalis of Asia and America were provisionally considered as 
the same, under the appellation of Ovis ammon, as also the Kam- 
tschatka sheep of M. Eschscholtz, which Mr. Blyth suspected to be 
only an individual slight variety; and accordingly, he traced the 
geographic range of this animal from Asia through Kamtschatka and 
the Aleutian Isles to the Rocky Mountains of North America, and 
southward upon that continent to California, where there was reason 
to believe it occurred, together with the true Californian species de- 
scribed by Mr. Douglas. In Asia he followed it southward to the 
Himalayas, but suspected that the Ovis ammon mentioned by dif- 
ferent authors as inhabiting the Caucasus and Taurus, referred to a 
distinct species. which he had to describe. The Ovis Californiana 
was next noticed; and then a superb new species, believed to be from 
Mount Taurus, the horns of which were suggested to bear every ap- 
pearance of having supplied the model which ancient sculptors follow- 
ed in their representations of Jupiter Ammon, and which therefore it 
