520 MANUAL OF ZOOLOGY sect. 



dilated or contracted. In the male the openings of the 

 ureters are situated much nearer the posterior narrower 

 end or neck than in the female. 



In the male rabbit the testes are oval bodies, which, 

 though in the young animal they occupy a similar position 

 to that which they retain throughout life in the pigeon, 

 pass backwards and downwards as the animal approaches 

 maturity until they come to lie each in a scrotal sac situated 

 at the side of the urogenital opening. The cavity of each 

 scrotal sac is in free communication with the cavity of the 

 abdomen by an opening, the inguinal canal. A convo- 

 luted epididymis, closely adherent to the testis, forms the 

 proximal part of the vas deferens. The vasa deferentia 

 (vd) terminate by opening into a urogenital canal, or 

 urethra, into which the neck of the urinary bladder is con- 

 tinued. A prostate gland (pr) surrounds the commence- 

 ment of the urethra, the neck of the bladder, and the 

 terminal parts of the vasa deferentia. A diverticulum of the 

 urethra, the uterus masculinus (urn), lies embedded in 

 the prostate gland close to the neck of the bladder. A 

 small pair of ovoid glands, Cowper's glands (c. gl), lie just 

 behind the prostate close to the side of the urethra. 



The terminal part of the urethra traverses a cord of 

 vascular tissue, the corpus spongiosum (c. s), which forms the 

 dorsal portion of the penis. A loose fold of skin, the 

 prepuce, encloses the penis. 



In the female the ovaries are small ovoid bodies attached 

 to the dorsal wall of the abdomen behind the kidneys. The 

 Graafian follicles enclosing the ova form only very small 

 rounded projections on their outer surface. 



The oviducts in the anterior part of their extent {Fallopian 

 tubes) are very narrow and slightly convoluted. They open 

 into the abdominal cavity by wide funnel-shaped openings, 



