. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. No. 5.] THE MALE OF PERIPATUS EISENII. 257 ductive organs are much more complicated than those of the female. The latter has two fused ovaries, paired receptacula ovorum, paired receptacula semines, and paired uteri. The testes are large tubular organs beginning at about the posterior third of the .body and running backward without much twisting to the seminal vesicles, which are somewhat larger in diameter. The seminal vesicles appear as dilatations of the testes, the right one of which is some distance in front of the left
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. No. 5.] THE MALE OF PERIPATUS EISENII. 257 ductive organs are much more complicated than those of the female. The latter has two fused ovaries, paired receptacula ovorum, paired receptacula semines, and paired uteri. The testes are large tubular organs beginning at about the posterior third of the .body and running backward without much twisting to the seminal vesicles, which are somewhat larger in diameter. The seminal vesicles appear as dilatations of the testes, the right one of which is some distance in front of the left. The vesicles of all the specimens I have examined are full of the spermatogonia discharged from the testes, spermatocytes, r> i and spermatozoa. The material was collected in October, when the. R FIG. 8. testes were active. The seminal vesicles lead posteriorly into a pair of exceedingly convoluted vasa deferentia, the right one of which passes over and then under the nerve to join the left, which passes under the nerve. They then run forward side by side, as two small, very thin-walled, straight ducts, for some distance, till they unite to form a common duct. These paired portions of the vasa deferentia are quite full of sperma- tozoa. The unpaired portion of the testicular ducts is of great length, sometimes exceeding twice the length of the whole body. This tube is clearly divided into two portions, the first. 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 resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
