432 DR MORRISON WATSON AND MR ALFRED H. YOUNG 
are lost in the neivhbourhood of the Fallopian tube. They are doubtless to be 
considered as representing the parovarium, or organ of Rosenmiiller. No 
trace of Gaertner’s canals could be made out. The surface of the ovary pre- 
sented no appearance of either Graafian follicles or of ova. 
The ovary of Beluga differs from that of Globiocephalus in its more elongated 
form, and in the presence of the superficial longitudinal ridges above referred 
to. This character, so far as we can ascertain, has not been noticed in any other 
cetacean with the exception of the sperm whale, in which, according to Dr 
J ACKSON,* the surface is “ somewhat fissured.” Dr Muriet describes the ovary 
in Globiocephalus as being arched over by a pavilion derived from the broad 
ligament of the uterus and the Fallopian tube. We could not distinguish this 
arrangement in Beluga. | 
Chioris is formed by the junction of two crura, one of which is attached 
to each of the rudimentary pelvic bones. The latter are small, cylindrical in 
form, and measure 24 inches in length and 4 of an inch in transverse section. 
They are placed one on either side of the vagina at a depth of 3 inches from 
the surface, the anterior extremity of each in the natural position of the animal 
being directed obliquely downward and forward, whilst the posterior extremity 
looks upward and backward. The crus clitoridis, attached to the posterior half — 
of the corresponding pelvic bone, is of large size, and covered by the fibres of 
a well-developed erector clitoridis. It unites with its fellow to form the body of 
the clitoris already described. In addition to the erector clitoridis, there were 
several other muscles attached to the pelvic bone which, so far as the state of 
the parts enabled us to observe, appeared closely to resemble those described 
by Dr Murtet in Globiocephalus. We may therefore refer to the excellent 
monograph of that author, with its accompanying illustrations, for a more exact 
account of the muscles in this region than the somewhat unsatisfactory condi- 
tion of the parts in Beluga permitted us to draw up. 
Pelvic peritoneum almost completely envelopes the rectum to within 2 incha 
from the anal orifice, whence it is reflected to the vagina, the superior wall of 
which it invests to a corresponding extent. The inferior wall of the vagina is. 
likewise covered by the serous membrane as far back as the base of the bladder. 
It may then be traced along the superior surface of that viscus from which it 
is reflected to the anterior abdominal wall, the whole of the lower surface of the 
bladder being thus devoid of peritoneal investment. The broad ligament of the 
uterus is arranged in the usual manner, and attaches the viscus to the lateral 
abdominal wall. Posterior to the ovary the peritoneum of the ligamentum — 
latum is thick and leathery, but towards the free margin of the latter it is thin 
and transparent. 4 
+ TY. 146. + II. p. 285. II. p. 288. 
Pp P 
