. Enchytræidæ of the west coast of North America. Enchytraeidae; Annelida. 102 EISEN Locality. — In the moist ground at a spring near St. Helena, Napa County, California, Dr. Richard C. McGregor. A single specimen. Characteristics. — The most important characteristic concerns the long narrow duct of the spermathecae and their inner tortuous duct. The nephridium is also characteristic, with its large anteseptal and very large nephrostome. As there was only a single specimen no attempt was made to section, and the above description is based on dissection only. The form appears so different that
. Enchytræidæ of the west coast of North America. Enchytraeidae; Annelida. 102 EISEN Locality. — In the moist ground at a spring near St. Helena, Napa County, California, Dr. Richard C. McGregor. A single specimen. Characteristics. — The most important characteristic concerns the long narrow duct of the spermathecae and their inner tortuous duct. The nephridium is also characteristic, with its large anteseptal and very large nephrostome. As there was only a single specimen no attempt was made to section, and the above description is based on dissection only. The form appears so different that it will probably be found to be a distinct species. HENLEA GUATEMALA sp. nov. pI. XV, fig. 7 ; text-figs. 67 and 68. Definition.— Length 6 to 10 mm., width .75 mm. Somites 67, deeply set and everywhere distinct, prostomium pointed. Setse straight and arranged fan-like; the most ventral seta of the ventral fascicles. Fig. 67. Henlea guatcmalce. and the most dorsal setas of the lateral fascicles are generally a little larger; otherwise the central setae in each fascicle are the smallest. Clitellum thin and contracted. Sexual papillae small and truncate- cylindrical. Septal glands in IV, V and VI. Peptonephridia large, with a thick and free basal part in III, and a thinner repeatedly folded part in IV to VII, the latter closely adhering to the Intestine. Brain almost twice as long as wide, posteriorly emarginate. Dorsal vessel rises In VII In front of the diverticles of the intestine. Intestinal pouches in VII; epithelium with comparatively few folds. Sper- mathecae consist of a slender duct about twice as long as the oval. 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 : Dou
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