IO2 



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 spermathecse 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. Seta? straight 

 and arranged fan-like ; the most ventral seta of the ventral fascicles 



FIG. 67. Henlea guatemalce. 



and the most dorsal setae 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 



