1910.] ORGANS OF THE FISH CHIMERA MOKTSTROSA. 



Texfc-fiff. 53. 



531 



m.d. o. 

 ....... mJe/ , 



ov. 



an. 



ur.gen. op. 



A. Urogenital organs of young female Chimcera dissected from right side. Some 



parts of the left side have been removed. 



B. Dissection of urogenital sinus of the above. The sinus has been opened, to 



show the apertures in its wall, by a dorsal posterior median incision. 



#, bristle passed through right abdominal pore ; an., anus ; dig.gl., digitiform 

 gland; dig.gl.of., opening of dig.gl. into urogenital sinus ; m.d., right oviduct ; 

 m.d.', uterine portion of left oviduct ; m.'d.' , left oviduct ; m.d.op., opening of 

 right oviduct into urogenital sinus ; m.d.o., ccelomic opening of oviducts ; 

 m.s., paired portion of kidney on right side; m.s.' , longitudinal duct receiving 

 collecting ducts from m.s.; m.'s.', paired portion of kidney on left side partly 

 removed; m.t., unpaired portion of kidney; m.t.', special ureters from m.t. ; 

 ov., right ovary ; v., cut rectum ; ur.hl., urinary bladder ; ur.bl.op., its opening 

 into urogenital sinus ; ur.gen.o-p., opening of urogenital sinus. 



34* 



