100 



EISEN 



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, 1893. All the specimens are adult. 



DETAILED DESCRIPTION. 



Characteristics. This species seems to be well distinguished from 

 nearly all other species by its broad brain and its unequal setae. 

 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 spermathecae. 



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 

 fully as intricately folded. 



Spermathecae 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. californica 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. Setae 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 altitude of several thousand feet. 



