252 California Earth-Worms. [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 Oligocheeta. 
DELTANIA BENHAMI n. sp. Size about one inch by one- 
sixteenth. The inner couples of setze as well as the sete 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 
setee, and by the size of the spermathecal diverticula. Much more 
pellucid than the preceding species. Blood yellow. 
Habitat.—In the small cafion coming from Lake Chabot, 
Alameda County, Cal., under moss or in the top soil at the foot 
of trees near the creek. 
ARGILOPHILUS GEN. NOV. 
A genus related to Plutellus Perrier, but characterized as fol- 
lows: Prostomium encroaches on the peristomium. Eight sete in 
four couples, commencing in ii. The sete of the inner couples 
not converging toward the male-pore, but closer set than the setze 
of the outer couples. Buccal cavity, pharynx, cesophagus, giz- 
zard, tubular-intestine, sacculated intestine, typhlosole, but no 
cesophageal glands or pouches. Clitellum not developed ven- 
trally. Spermathecal pores between vii/viii and viii/ix. One or 
two longitudinal rows of ventral papilla. Two pair of spermathecze. 
_ 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 setze 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 setee, without any 
serial regularity. Blood red. 
Large earth-worms with thick round bodies and pale flesh— 
