252 California Earth-Wornis. [zoE 



Habitat. — Golden Gate Park, San Francisco, together with 

 the former species. First found by Mr. Carlos Troyer, to whose 

 interest and kindness I owe the possession of several new species 

 of Oligochseta. 



Deltania Benhami n. sp. Size about one inch by one- 

 sixteenth. The inner couples of setae as well as the setae in the 

 inner couples are much closer together than in any of the other 

 species. The spermatheca large, opaque, in ix, opening viii, 

 ix, with two diverticula, which are less than one-half as large as 

 the central spermathecal sac. 



A small, very hyaline worm, entirely distinct from the preced- 

 ing species and at once characterized by the closeness of the ventral 

 setae, and by the size of the spermathecal diverticula. Much more 

 pellucid than the preceding species. Blood yellow. 



Habitat. — In the small caiion coming from I,ake Chabot^ 

 Alameda County, Cal., under moss or in the top soil at the foot 

 of trees near the creek. 



ARGII.OPHILUS GEN. NOV. 



A genus related to Plutellus Perrier, but characterized as fol- 

 lows: Prostomium encroaches on the peristomium. Eight setae in 

 four couples, commencing in ii. The setae of the inner couples 

 not converging toward the male-pore, but closer set than the setae 

 of the outer couples. Buccal cavity, pharynx, oesophagus, giz- 

 zard, tubular-intestine, sacculated intestine, typhlosole, but na 

 oesophageal glands or pouches. Clitellum not developed ven- 

 trally. Spermathecal pores between vii/viii and viii/ix. One or 

 two longitudinal roivs of ventral papillae. Two pair of spermathecae. 

 Testes in x, xi. Spermsacs paired in x, xi, xii, some of which 

 enclose the ciliated funnels. Two pair of spermducts, which join 

 their respective very large coiled prostates in xviii, at the upper 

 end of the muscular duct. Two penial setae open in the same 

 pore, but not in the same duct as the prostate. Nephridia with- 

 out any vesicle at the body wall. Nephridia pores open var- 

 iably, some in front of the third, some in front of the fourth, and 

 others outside of, or lateral of the fourth setae, without any 

 serial regularity. Blood red. 



Large earth-worms with thick round bodies and pale flesh — 



