VOL. Iv. ] California Earth-Worms. aes 
color, marbled bluish. As far as known, California possesses two 
outwardly distinct forms, but which on accourit of their exact 
similarity as regards their internal anatomy, I must refer as sub- 
species to the same general species. 
ARGILOPHILUS MARMORATUS ORNATUS n. sp. The ventral 
side of the genital somites furnished with two longitudinal rows 
of ventral sensory papille, one row on each side of the median 
line. The number of papillz, which are strictly intersegmental, 
varies from one to seven or more. 
Habitat.—North of San Francisco Bay as far up as Oregon. 
Very common in the vicinity of Santa Rosa, etc., especially in 
heavy moist, and rich clayey soil. The most common earth- 
worm of the region. ‘This species was first found by Miss A. 
Eastwood of California Academy of Sciences. 
' ARGILOPHILUS MARMORATUS PAPILLIFER n. sp. The ven- 
tral region of the genital somites and posterior to the clitellum 
furnished with a single row of median intersegmental papille, 
varying in number up to seven or eight or more. The papillce are 
generally longer than in the preceding species. Although I have 
examined hundreds of specimens I have never seen any transi- 
tions between these forms. If the papille in these subspecies 
were of constant number I would not have hesitated to pronounce 
them as equal in importance as species characteristics to the 
tubercula pubertatis in the true Lumbricide. The great vari- 
ability in the number of the papillz, however, place them in a 
somewhat different light, the only constancy of outward char- 
acter being that in one form they are paired, in the other median. 
In the paired form they are situated one on each side of the 
ventral ganglion, while the median ones are situated directly 
under the ventral ganglion, one or one pair in each segment. 
Habitat.—This form is, so far, found only south of the 
region inhabited by the former. I have specimens from Berkeley, 
San Joaquin Valley, Monterey, San Francisco, Palo Alto, etc., 
but only one single specimen from Santa Rosa, where the former 
form is most abundant. ‘The species prefers very heavy adobe 
soil, and occurs only in the richest ground, never in poor soil. 
The occurrence of Argilophilus is always a sign of the = vie 
