. Alaska. Natural history -- Alaska; Scientific expeditions; Alaska. t:oo collar. Lymphocytes large, disc-like, in cross-section shuttle-shaped. Color yellowish white. Locality. — Santa Rosa, Sonoma County, California. Under oak trees near the city. May, 1S93. ^^ ^^ specimens are adult. DETAILED DESCRIPTION. Characteristics. —This species seems to bcM^ell distinguished from nearly all other species by its broad brain and its unequal setse. The spermathecae, though tubular without any perceptibly enlarged terminal ampulla, are apparently fully developed. The species differs from Henlea nasuta E
. Alaska. Natural history -- Alaska; Scientific expeditions; Alaska. t:oo collar. Lymphocytes large, disc-like, in cross-section shuttle-shaped. Color yellowish white. Locality. — Santa Rosa, Sonoma County, California. Under oak trees near the city. May, 1S93. ^^ ^^ specimens are adult. DETAILED DESCRIPTION. Characteristics. —This species seems to bcM^ell distinguished from nearly all other species by its broad brain and its unequal setse. The spermathecae, though tubular without any perceptibly enlarged terminal ampulla, are apparently fully developed. The species differs from Henlea nasuta Eisen by its more tubular spermathecje. Peptonephridia. — Judging from a series of longitudinal sections,these glands resemble the figure given by Vejdovsky of H. leptodera ('79, Taf. X, fig. 2). The basal part, however, is much larger and more irregularly folded, and the ter- minal tubules are fewer in number. The glands run close to the intestine and inte- rior to the blood sinus in VII. The intestinal pouches in VII are sim- ilar to those figured by Michaelsen from H. nasuta ('88, fig. i). The villi are (T -'^ \ \ ^ fully as intricately folded. ^^'.^A, j \/ Spermathecse are more cylindrical than those of H. nasuta Eisen ('79), to which species our present form seems closely related. Even as regards the setae of the two species, H. nasuta and H. Fig. 64. Henlea californica. califomica resemble each other greatly. HENLEA CALIFORNICA MONTICOLA var. nov. Text-fig. 65. Definition.—Length 6 mm,, width .65 mm. Somites 54. Brain about one-third wider than long. Seta3 in fascicles of four, five and six. The setae bordering the lateral interval are slightly longer. The spermathecae, which are sharply bent, are furnished with four or more basal accessory glands. Color of formalin specimens white. In other respects similar to the species. Locality.—West Fork of Feather River near Morgan Spring, Dr. Richard C. McGregor (Sept., 1898). The locality is in the Sierra Nevada at an al
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