36 
found a marked visceral displacement owing to the 
presence of a mass apparently an ovarian growth. It 
is gray, roughly egg shaped, slightly nodular, firm, re- 
silient, and seems to be cystic at one place. Section 
shows a small cyst with grayish fluid at the lower pole. 
The rest of tumor is gray-brown mottled and streaked. 
Near its insertion is a yellow-brown necrotic area about 
1 X 1.0 cm. It is uniform in consistency and structure 
except for cyst and necrosis. Xo metastases found. 
No. 5994. Common Opossum {Didelphys mrginiana). 
There is subinvolution and total prolapse of left uterine 
cornu which has taken with it one inch of rectum. The 
cause of the prolapse could not be found. 
No. 6071. Jaguar (Felis onca). Fibro adenoma of 
uterus. The body of the uterus is firm and cordlike, 
mucosa is blackish gray and uneven. There is gray fluid 
in the cavity. The right cornu has a bulge at about its 
middle which is a firm gray tumor 3 cm. long attached 
by short wide pedicle. Tumor is resilient and contains 
three small cysts containing clear fluid. Microscopic 
section shows a fibro-adenoma of a very cellular type. 
In the dilated acini one can see large vacuolated cells 
often resembling amoebae. They are probably degen- 
erated epithelia. In no area is the epithelial lining of 
the glands distorted or reduplicated. 
Tumors. 
No. 5501. Common Raccoon 9 {Procyon lotor). 
Simple adenoma of pancreas. 
No. 5540. Undulated Grass Parrakeet 9 {Melopsit- 
tacus undulatus). Adenoma of kidney. 
No. 5696. Coypu Rat {Myocastor coypus). Sarcoma 
of right thyroid. 
No. 5800. Java Sparrow 9 {Muniazory ivora). Car- 
cinoma of liver. 
No. 5810. Scaly Ground Dove 9 {Scardapella squa- 
mosa). Spindle cell sarcoma of left kidney with metas- 
tases to left tibia. 
