. Enchytræidæ of the west coast of North America. Enchytraeidae; Annelida. 68 EISEN Sexual glands. — The penial papillse on each side consist of two distinct and separate masses of glandular cells arranged in the usual feathery manner characteristic of this genus. There are two agglom- erations of such glands, one anterior to the other, the anterior one being the smallest. In the specimen sectioned longitudinally the former gland-complex is seen to consist of eight agglomerations, while. Fig. 38. EnchyircTiis kincaidi. the latter or anterior one contains only three or four. There is, how- ever
. Enchytræidæ of the west coast of North America. Enchytraeidae; Annelida. 68 EISEN Sexual glands. — The penial papillse on each side consist of two distinct and separate masses of glandular cells arranged in the usual feathery manner characteristic of this genus. There are two agglom- erations of such glands, one anterior to the other, the anterior one being the smallest. In the specimen sectioned longitudinally the former gland-complex is seen to consist of eight agglomerations, while. Fig. 38. EnchyircTiis kincaidi. the latter or anterior one contains only three or four. There is, how- ever, some variation, as in one dissected specimen the anterior complex is only one-third smaller than the posterior one. The sperm-funnels are somewhat curved and about three times as long as wide. Sperm- ducts open independently of the penial papillae and a little more ventrally than either. JSfephridia. — The inner duct narrow, running in a zigzag manner. Sections show that the lumen is connected with innumerable minute and probably branching ducts, too small to be indicated on the figure (p1. XVIII, fig. 3). ENCHYTR^US ALASKA sp. nov. pi. I, fig. 19; p1. XIX, figs. 4-6; p1. XX, figs. 1-2 ; text-figs. 39 and 40. DeJi7iition. — Length 15 mm. or less, width .75 mm. Somites 6k^ strongly tapering toward the tail end. Prostomium rounded ; somite I smaller than II or III. Head-pore between prostomium and somite I. Setae straight: anterior laterals 3, posterior 2 ; anterior ven- trals 3, posterior 2 and 3. Sexual papillae not prominent. Clitcllum. 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 Eisen, Gustavus A. , 1847-1940; Washington Academy of Sciences (Washington, D. C. ); Harriman Alaska Expedition (1899). New York : Doubleday, Page
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