vd. 



ANG 



Poab 



FIG. 288. URINOGENITAL ORGANS OF Protopterus annectens. A, FEMALE ; B, 

 YOUNG MALE. From the' ventral side. (After W. N. Parker. ) The peritoneum 

 is removed on the right side in A, and on the left in B. 



In both figures : N,N~ l , kidneys ; Ost, ccelomic aperture of Miillerian duct ; (y, Ig, 

 lymphatic tissue in connection with the kidneys ; NG, kidney ducts : A NO, 

 apertures of kidney ducts into the cloaca (Cl) ; Pap, genital papilla in the 

 cloaca formed by the fusion of the base of the Miillerian ducts ; RD, cloacal 

 caecum ; Re, rectum ; Poab, abdominal pore ; Cp, postcaval vein, connected 

 by transverse anastomoses (GWJ.S-) with the left posterior cardinal vein ( V. card), 

 The veins from the gonads are also indicated. 



In A : O V, Ov l , ovaries ; ovd, ovd', oviducts. 



In B : Hod, testes, with their investment of lymphoid and adipose tissue (LG) ; 

 Hod.G, free portion of sperm-duct,uniting with the Miillerian duct (MG} 

 at *. Per, peritoneum. 



