510 Zoological Society. 
six soft rays; anal extending as far as the tail; lateral line me- 
sial. 
* Cirrhi of nearly equal length, one pair arising immediately before 
the nostrils; another from the angles of the mouth; and a third and 
fourth from the lower jaw, near the angles of the mouth. 
‘Stomach small, with a moderate cul-de-sac; intestines equal, 
without ceca, of several convolutions, measuring seven inches in 
length. 
** No air-bladder. 
“The peculiar organs to which I wish to direct attention are 
situated exterior of the abdomen: there is one on each side, lying 
immediately over the transverse processes of the vertebree ; and in the 
angle formed between them and the spinous processes they are 
loosely attached to the surrounding parts, and covered only by the 
general integuments. They have the form of cylindrical tubes, are 
about the size of an ordinary black-lead pencil; they are closed at 
the posterior extremity, which extends within about three inches of 
the tail, and they open under the base of the cranium, between two 
of the branchial pairs. They are of loose cellular texture, of a 
whitish gray colour, speckled with numerous minute black points; 
they are traversed from one extremity to the other by a blood-vessel 
(vein?) of considerable size, into which numerous smaller branches 
open at right angles. 
‘« These sacs are perhaps intended for reservoirs of water, to enable 
the animal, during its migrations from tank to tank, to maintain the 
gills in a constantly moist condition. ‘They may also perhaps serve, 
in ordinary circumstances, as an extension of the respiratory surface, 
and the numerous blood-vessels that are seen on their coats would 
tend to give a probability to such a conjecture.” 
Mr. Ogilby pointed out the characters of a new species of Ante- 
lope, which was exhibited to the Meeting. This animal lived for 
some time in the menagerie, having been presented to the Society 
by W. Willshire, Esq., Corresponding Member, who procured it at 
Mogadore. It is closely allied to the Antilope Dorcas and A. Ara- 
bica, and most nearly resembles the latter in its colouring, but is 
readily distinguished by its much greater size ; its total length, from 
the tip of the muzzle to the tail, being about forty-three inches, and 
its height twenty-eight inches: the ears of the Mogadore animal are 
moreover proportionately larger, measuring in height about 6? inches, 
or rather more. Like A. Arabica, it has a black patch on the upper 
surface of the muzzle, and a black line on either side of the face, 
extending forwards from the eye, and terminating above the angle 
of the mouth: the dark band on the flanks is very broad, and of a 
deep brown colour, inclining to black ; there is also a distinct broad- 
ish black mark on each side of the rump; the fore knees are fur- 
nished with distinct black tufts. The specimen is a female, and has 
slender horns, about equal to the ears in length; the horns are in- 
distinctly lyrated, in fact, nearly straight, and exhibit eleven or 
twelve annulations, four or five of which, at the base of the horn, 
are very close together. Mr. Ogilby stated that he had observed 
