196 



BULLETIN OF THE BUREAU OF FISHERIES. 



of the ovary where it again completely infolds the organ (fig. 7 c). This flap and the 

 inner side of the ovary probably lie in the trough on the top of the intestine, and the 

 greatly narrowed or pointed end of the ovary rests on the bilateral expansion formed 

 by the deflection of the edge of the trough to the abdominal wall (fig. 7 g). 



Fig. 7. — Drawing by F. E. Prior, from dissection of a specimen 23^4 inches long, from tlie Penobscot River, Me. Dorsal 

 view of a spread-out section of posterior portion of abdominal viscera and membranes of nearly ripe Atlantic salmon (Salmo 

 solar), a. Left ovary.6,right ovary, turned away from mesovarium showing eggs not covered by ovarian membrane: c.mesovaria 

 laid back from normal position on surface of otherwise uncovered eggs; d, outer edge of ovarian membrane; e, fold or free borders 

 of mesovaria wliich imite posteriorly to form the oviducal channel;/, oviducal channel continuation of e; g, posterior lateral 

 expansion of oviducal chamiel, each side of wliich unites with peritoneum of the lateral walls of the abdominal cavity; h, genital 

 pore; ;', eggs not covered by ovarian membrane; q. intestine; i, dorsal intestinal mesentery; -w, posterior end of intestinal mesen- 

 tery with confluent mesovaria. 



The right ovary (fig. 7 h) , always somewhat shorter, seldom extends in this manner 

 much behind the common opening above the intestine, and accordingly it may or may 

 not have some extent of membranous flap as just described. The ova apparently run 

 along the fold on the inner side of the ovary, and hence into and along the trough 

 mentioned. 



