(_a_) The testes, a pair of ovoid pale-yellow bodies attached to the
dorsal wall of the body cavity by a fold of the peritoneum. They lie
on the ventral sides of the kidneys and are connected to them by
efferent vessels which pass into the kidneys.
(_b_) The corpora adiposa or fatty bodies lying in front of the
kidneys.
(_c_) The ureters which run along the outside of the kidneys and
unite posteriorly to form a single duct opening into the cloaca.
[_In the Frog the ureters do not join together but open separately
into the cloaca. Each ureter has a slight swelling, the vesicula
seminalis, on its outer side._]
[Illustration: FIG. 9--Male Urinogenital System of Xenopus and
Rana.]