560 
D. S. KELLICOTT. 
muscles attached the C. spongiosum to the tuberosities of the 
ischia. On either side of the C. spongiosum was a shapeless 
mass, the structure of which seemed to indicate the corpus 
cavernosum . Externally below the plans, there was a trans¬ 
verse fold, or partition of mucous membrane forming a sac 
open above. The fold was laterally attached to the labia 
major a, and really appeared to represent th z preputium. 
No trace of ovaries or uterus was found, so it seems safe 
to conclude that the essential sexual regions were male and 
the external female. 
Note.— The dissections were made bv the Class in Com- 
parative Anatomy ; the notes were made by Mr. J. TI. 
McGregor. 
II. A case of extra uterine pregnancy in a cat. The ani¬ 
mal was of normal size, apparently in good health and ex¬ 
hibited the usual cheerfulness. The cyst was found on open¬ 
ing the abdominal cavity lying free in the caudal part on the 
left side. It was somewhat uniform, its dimensions were ' 
^xix2 inches, and contained two kittens ; the color was dark 
livid and the whole was inclosed by a delicate, hyaline mem¬ 
brane. 
The ovaries and the right horn of the uterus were normal 
in appearance; the left horn was greatly reduced, appearing 
as a slender filament only. This seems to indicate that the 
foetuses escaped by rupture, and that subsequent occulation 
and atrophy had taken place. No trace of extra-uterine pla- 
centation was to be found. 
As said above the whole mass was enveloped by a thin 
membrane ; this was continuous with a firm fibrous portion 
lying in the concave edge of the cyst. On removing the em¬ 
bryos they were found separately enveloped by a firm mem- i 
brane—the amnion. Between this and the outer membrane 
the flesh-colored substance which apparently represented the 
ringed placentas was of variable thickness conforming more 
or less to the outline of the enclosed foetuses; its substance 
had a marked columnar structure suggesting the villi. A 
large number of crystals, probably cholesterin, were found 
mingled with this substance. 
