Anaforii)/ of AiidraJiav AinpliiJiin. 



227 



Chiroleptes ailbofnittatus), in which latter they arise from the 

 luiddle lit' the kidney. In a few fornir, these veins are very 

 short, the kidneys being so closely apposed ais to appear as 

 one mass ventrally, as in Pseudophryne australis and Notaden 

 benuetti. Rarely the kidneys are distinctly unequal in length 

 as in Chiroleptes alboguttatus, where the right kidney is fully 

 2 mm. longer than the left. 



In the more detailed structure of the kidney, considerable 

 variations are f<iund. 



/?PV 



ccc 



Scheme of Aiiiphibian Kidney seen in transverse section — to 

 show the relationships of th(^ male leproductive ducts and the 

 uriniferous tiilnilcs. 



a. = Ampulla (Mi loiigitu(lin;il Bidder's canal. 



^ Ciliated part of uriniferous tubule. 



= Glomerulus of Malpighian l)ody. 



= Neck of urinifei-ous tul)ule. 



= Peritoneum. 



z=L Renal Artery. 

 R. P. V.= Renal Portal Vein. 

 R. V. := Renal Vein, 

 t. c. c. ^ Transverse collecting canal, 

 ur. = Ureter. 



V. c. c. =: Vertical collecting canal. 

 V. e. = Vas efi'erens. 



V. t. c. ^ Ventral transverse canal. 



0. t. 



pel-. 

 R. A. 



