ABDOMINAL VISCERA 23 



the other viscera, are outside the abdominal coBlomic cavity. 

 (See Fig. 2, p. 19.) 



a. The ureters, or ducts of the kidneys, are a pair of white 



tubes arising from the outer edges of the kidneys at 

 about a quarter of their length from their hinder ends, 

 and running back to open into the dorsal wall of the 

 cloaca, opposite the opening of the bladder. 



In the male frog a pouch-like dilatation, the 

 vesicula seminalis, is present on the outer side of 

 each ureter, close to its opening into the cloaca. 



b. The adrenal bodies are small yellowish-red patches on 



the ventral surface of the kidneys. 



c. The corpora adiposa, or fat bodies, are two bright yellow 



tufts of flattened processes attached to the dorsal wall 

 of the body cavity; they vary much in size, and 

 usually come to the surface just behind the Uver. 



2. The Spleen is a small round dark-red body lying in the 

 mesentery, opposite the commencement of the large intestine. 



