. On the anatomy of vertebrates [electronic resource] . d when empty,cylindrical when inflated, withthe ovigerous stroma lining, asit were, only the ventral halfof the walls of the cylinder, and terminating where the oviducalportions of each sac unite together to form the common shortefferent canal. The inner surface of the e stroma is beset withsmall tubercles, arranged in interrupted linear series, each tuberclesupporting four or five papilliform ovisacs. In the Pike the stromaforms a longitudinal strip, in short transverse plaits, along themedian side of the long ovarian sacs: fig. 383, B,
. On the anatomy of vertebrates [electronic resource] . d when empty,cylindrical when inflated, withthe ovigerous stroma lining, asit were, only the ventral halfof the walls of the cylinder, and terminating where the oviducalportions of each sac unite together to form the common shortefferent canal. The inner surface of the e stroma is beset withsmall tubercles, arranged in interrupted linear series, each tuberclesupporting four or five papilliform ovisacs. In the Pike the stromaforms a longitudinal strip, in short transverse plaits, along themedian side of the long ovarian sacs: fig. 383, B, shows two of theovarian plaits, from which the developed ova hang in subpedun-culate ovisacs. In the Wolf-fish the stroma extends over thewhole of the internal surface of the ovary, into the cavity ofwhich it projects in the form of numerous oval compressedprocesses. In general, its superficies is extended by being plaitedinto numerous folds, which are transverse in the Cod and Salmon,oblique in the Mackerel, and longitudinal in some other Fishes. 383. Ovaries and oviduct of an Osseous Pish. FEMALE ORGANS OF FISHES. 573 In the Salmon the free surface of the stroma is exposed. In theOsseous Fishes that retain and hatch their ova the stroma doesnot extend to the posterior part of the ovarian sac, but this 384
Size: 1151px × 2170px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubject, booksubjectbirds, booksubjectfishes