URIXOGEXITAL ORGANS 



355 



FIG. 28 L KIDNEY OF Discoglossu* pictus. From the ventral surface, showing 

 the nephrostomes (ST). (After J. W. Spengel). 



Ur, urinogenital duct, enlarging at Ur 1 to form a seminal vesicle. 



veins. In consequence of this change of function, for such it must be 

 considered, the body-cavity of adult Anura forms a closed lymph-sinus, as in 

 the Amniota ; the peritoneal fluid, which in the larva was carried to the 

 exterior and lost, is in the adult poured into the general circulation, like the 

 rest of the lymph. 



A A 2 



