250 NOTES AND MEMORANDA. 



i. e. in a position at right angles to that of the right testis ; 

 and it was in front of the anterior edge of the partition 

 between the two posterior cavities, so that its duct passed 

 ventrally to the genital opening. 



I believe that the male can always be distinguished by 

 the narrower shape of its posterior region. The presence 

 of the roe in the female causes the ventral edge to have 

 a more convex outline in the female, but the dorsal edge 

 also is much less slanting and more convex in the female 

 than in the male. The tail in the male is also, in the 

 specimens I have examined, larger than in the female. 



The sole spawns in winter and spring, as stated in the 

 books, and it is evident, from the condition of the specimens 

 I have described, that they werenear the spawning period. 



J. T. Cunningham. 



February 29th, 1888. 



