URINO-GENITAL ORGANS 



49 



Ov. 



FIG. 7. Diagrammatic representation of modifications of the urino- genital ducts. 

 1, 2, Male and female Newt ; 3, a tubule of the kidney ; 4, male Rana ; 5, 

 male Bufo ; 6, male Bombinator ; 7, male Discoglossus ; 8, male Alytes. a, Artery 

 entering, and producing a coil in, the Malpighian body, M ; B, Bidder's organ ; 

 ff.s.c, etferent segmeutal canal ; F.B, fat-body ; yl, glomerulus ; A", kidney ; l.c.c, 

 longitudinal collecting canal ; J/, Malpighian body ; Md, Miillerian duct ; JV, 

 nephrostome ; 0, ovary ; Ov, oviduct ; s.d, segmeutal duct ; T, testis ; Ur, ureter ; 

 r.if, vas deferens ; V.s, vesicula seminalis. 

 VOL. VIII E 



