. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. MEMBRANES, OVARIES, AND OVIDUCTS OF SAIvMONOIDS. 195 As the ova approach maturity,' the left ovary is nearly or quite always the longer, and it extends, tapering, to the posterior end of the abdominal cavity (fig. 7 a). About at the point where the mesovarium as a suspensory membrane ends and forms the i. Fig. 6.—Drawing by Mrs. Effie B. Decker from a specimen of Oncorkynckus kisutch, 26 inches long, from Ankon Slough, Alaska, July 10. 1917, collected by Ernest P. Walker, salmon inspector. Dorsal view of the posterior end of the a
. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. MEMBRANES, OVARIES, AND OVIDUCTS OF SAIvMONOIDS. 195 As the ova approach maturity,' the left ovary is nearly or quite always the longer, and it extends, tapering, to the posterior end of the abdominal cavity (fig. 7 a). About at the point where the mesovarium as a suspensory membrane ends and forms the i. Fig. 6.—Drawing by Mrs. Effie B. Decker from a specimen of Oncorkynckus kisutch, 26 inches long, from Ankon Slough, Alaska, July 10. 1917, collected by Ernest P. Walker, salmon inspector. Dorsal view of the posterior end of the abdominal cavity. the abdominal wall somewhat spread out. In natural position this portion of the abdominal cavity is very narrow, and the walls closely approximate. The intestine is laterally flattened and compressed so that it does not show beyond the edges of the superimposed membrane, and the edges of the membrane are turned upward, forming a trough, a. Left ovary; b. right ovary; cupper severed edge of mesovarium; d, outer edge of ovarian membranous covering; e, fold or free border of the posterior exten- sion of ovarian membrane, which joins with the other on median line of intestine forming an oviducal chaimel or trough; /. oviducal channel, combiaation of e from both sides; g. lateral deflection and junction of oviducal membrane with, abdominal wall; h, genital pore; q, intestine; /, severed dorsal intestinal mesentery; w. posterior end of severed mesentery. beginning of the trough mentioned (fig. 7 w), the posterior extension of the ovary has no membranous attachment to the trough, but has a free fold or flap of mesovarial or ovarian membrane along its upper inner side which narrows posteriorly to the end 1 As observed in one specimen each of Atlantic and humpback Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemb
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