. The fur seals and fur-seal islands of the North Pacific ocean. Sealing; Seals (Animals). FEMALE ORGANS. 19 10 to 11 inches long. The corpora cavernosa are united, the lines of their union being represented by a dense vertical plate. Between the two ventrally is a groove, the sulcus urethralis, the floor of which is formed by the membranous corpus spongiosum. The distal half of the penis is composed mostly of a bone, club-shaped proximaliy and expanded vertically at its distal end. Transverse sections of the penis show that this bone consists of the united and ossified terminal halves of the
. The fur seals and fur-seal islands of the North Pacific ocean. Sealing; Seals (Animals). FEMALE ORGANS. 19 10 to 11 inches long. The corpora cavernosa are united, the lines of their union being represented by a dense vertical plate. Between the two ventrally is a groove, the sulcus urethralis, the floor of which is formed by the membranous corpus spongiosum. The distal half of the penis is composed mostly of a bone, club-shaped proximaliy and expanded vertically at its distal end. Transverse sections of the penis show that this bone consists of the united and ossified terminal halves of the corpora cavernosa. The posterior end of the corpus spongiosum forms no differentiated glans, but covers the end of the bone simply as a thin membrane. The urethra enters the penis at about its middle, and opens to the exterior below' the distal end. The penis is ordinarily bent into a V-shaped position, the angle being at the anterior end of the bone. The proximal unossifled half projects backward and the distal half forward below the other. The female organs.—Each ovary is shaped somewhat like a spherical wedge with the edge lying longitudinally and turned dorsally. It is also slightly notched so that the ovary is kidney-shaped in dorso-ventral profile. It is connected with the liga- mentum latum at the notch and near it on the inner surface with the anterior inner aspect of the horn of the uterus on the same side, the exterior of the latter being directly continu- ous with the ligamentum latum in front. Each ovary is inclosed in a recurved fold of the suspend- ing ligament forming a pouch almost closed, a small opening being left on the inner side near the dorsal edge. The vagina is wide and expands anteriorly.' Below the widened part it re- ceives the urethra on its ventral surface. The uterus is double; the two horns diverge in front, but their approximated posterior ^"'- ^-T'^^Ws and spermatic vein of young male, natural size. ends are coalesced for some distance. T
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherwashingtongovtprin
