99 



SpermathecJE with distinctly differentiated ampulla. Large peptonephridia. 

 The setae of nearly equal length or slightly Fri'derida-shaped. Anteseptal 

 narrow and comparatively small. Brain posteriorly emarginated. Two 

 large intestinal pouches in VIII/IX 3. H. leptodera Vejd. 



Spermatheca with distinctly differentiated ampulla and with a duct nearly 

 three times as long as the pouch. Peptonephridia present. Setae 6 to 8, 

 the inner ones shorter. Anteseptal narrow and small, brain posteriorly 

 emarginated. No intestinal pouches 4. H. dicksoni Eisen. 



Spermatheca with distinct ampulla tapering toward the intestine. No pepto- 

 nephridia. Setae variable, generally straight, of equal size, or the inner ones 

 shorter. Anteseptal rather long and narrow, cylindrical. Brain posteri- 

 orly deeply notched. Four large intestinal pouches in VIII/IX. 



5. H. ventriculosa d'Udek. 



Spermatheca with a distinct ampulla gradually tapering toward the intestine. 

 Peptonephridia large. Setae about six in a fascicle, the inner ones shorter. 

 Anteseptal broad and large. Brain posteriorly emarginated. Two intes- 

 tinal pouches in VII/VIII 6. H. guatemalce sp. nov. 



Spermatheca with pear-shaped ampulla, and twice as long as duct. Pepto- 

 nephridia present. Setae 4-7, rarely 2-3, straight, of equal length or the 

 inner shorter. Postseptal long and with long duct projecting from its 

 anterior end. Brain posteriorly emarginated. Two intestinal pouches 

 in VU/VIH 7. H. nasuta Eisen. 



Spermatheca with central ampulla three times wider than duct. Peptone- 

 phridia short, undivided. Setae straight, of equal length, ventrally 7-0, dor- 

 sally 5. Postseptal broad, flat, posteriorly emerging into the duct. Brain 

 posteriorly truncate. No intestinal pouches 8. H. rosai Bretsch. 



n. Spermathecae with two distinct diverticles. 



Setae 4 in the fascicle, the inner ones much shorter. Large peptonephridia. 

 Anteseptal very large and broad. Brain posteriori v convex. Intestine 

 with two large pouches in VIII/IX, extending into VII. 



9. H. ekrkorni sp. nov. 



HENLEA CALIFORNICA sp. nov. 

 pi. xv, fig. i ; text-fig. 64. 



Definition. Length 8 mm., width .75 mm. Somites about 60. 

 ' Setae of unequal length in the fascicle, from 4 to 6. No dorsal pores. 

 Prostomium narrow and pointed. Clitellum prominent, XII and XIII. 

 Sexual papillae small but distinct. Supra-pharyngeal glands small. 

 Septal glands prominent, in V, VI and VII. Peptonephridia begin 

 in IV, closely adhering to the tubular intestine. Brain wider than 

 long, posteriorly as well as anteriorly concave. Dorsal vessel rises in 

 VIII. No chloragogen glands on either blood vessels or intestine. 

 Tubular intestine nipped by the septa ; sacculated intestine begins in 

 VIII. Two large intestinal pouches in VIII. Spermathecae tubular, 

 slightly bent, opening into the intestine, at the base furnished with 

 about two accessory glands, no diverticles. Sperm-ducts narrow. 

 Penial bulb with two kinds of glands, one opening into the sperm- 

 duct, the other opening next to the sperm-duct, but all confined to the 

 bulb. Ncphridia with small, narrow anteseptal and without glandular 



