GENITAL ORGANS 



467 



the female are said to be present in the form of short ccelomic 

 funnels opening into the kidney-ducts. 



In the Dipnoi (Fig. 352) the elongated gonads are invested 

 with lymphoid and adipose tissue, are closely attached to the 



B 



ovd, 



vef 



\- ur- 



FIG. 350. FIG. 351. 



FIG. 350. FEMALE URINOGENITAL ORGANS OF A, LEPIDOSTEUS, AND B, AMIA. 

 (A, after Balfour and Parker ; B, after Huxley.) 



a, degenerate anterior portion of kidney ; W, bladder ; kd, kidney ; onl, oviduct ; 

 oml', aperture of oviduct into bladder, and ovd", its peritoneal aperture ; 0*77, 

 ovary; p, peritoneum ; n.g.ap, urinogenital aperture ; ur, kidney duct. 



FIG. 351. MALE URINOGENITAL ORGANS OF LEPIDOSTEUS. (After Balfour and 



Parker. ) 



W, bladder; l.c, longitudinal canal; ts, testis ; u.y.ap, urinogenital aperture; 

 ur, kidney duct; v.ef, vasa efferentia. 



outer border of the kidneys, and when ripe become greatly 

 enlarged, so as to embrace the gut ventrally. The oviducts, 

 which correspond to Mullerian ducts, are long and coiled, re- 

 sembling those of the Amphibia : posteriorly they unite before 



H H 2 



-... ^. 



