1883,] PROF. HUXLEY ON THE OVIDUCTS OF OSMERUS. 135 



m.v.r. 



A. The genital organs of a spawning female Osmerus eperlanus. natural size. 

 B. External face of the ovary. C. Transverse section. 



ce, oesophagus ; an, anus ; Pn, air-bladder ; od. r, od. I, abdominal aperture of the 

 right and left oviducts ; o, o, ova filling the oviducts; ff, external genital 

 aperture ; m.o. r, m.o. I, right and left mesoaria ; u, urinary aperture. 



Proc. Zool. Soc — 1883, No. X. 



10 



