102 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



pale on the sides, in the middle of the front part with a broad 

 pale spot or a double elongate spot, in appearance similar to 

 D. ceneolus. Venter with two or three dark stripes. The palpus 

 of the male is similar to that of D. arizonensis (and glacialis) 

 but the palpal organ is more slender, the tube stouter and broad 

 at tip (not pointed as in arizonensis), and the bifid process of 

 the tibia has the outer part plainly longer than the inner (in 

 arizonensis they are equal). The vulva shows two large open- 

 ings much as in D. glacialis but they are less than their diameter 

 apart, and behind is the usual median notch. Length, 6 mm. 



Figure 5. — Male palpus, and vulva. 



Holotype, male, No. 741, Mus. Calif. Acad. Sci.; Helen Van 

 Duzee collector, April 7, 1918. 



Type locality, San Francisco, Calif. 



6. Pellenes peckhami, new species 



Male: — Cephalic area and dorsum of abdomen clothed with 

 appressed tawny or golden hair; other longer, erect, black hairs; 

 on basal part of abdomen there is more or less trace of a median 

 white line; sides of abdomen white-haired; sides of the cephalo- 

 thorax with short white hair, and a faint line of white just below 

 dorsal eyes; a row of long black hairs over front eye-row; clypeus 

 and mandibles tawny, with very short white hair; legs paler, 

 tibiae rather darker, leg III unmodified; leg I reddish brown, 

 metatarsi and tarsi paler, a long fringe below on outer part of 

 femur, patella and tibia, and above on femur, patella and tibia; 

 largely black below, largely pale above, but the basal section of 

 tibia black; the inner side of tibia is black and densely clothed 

 with black hair; tarsus of the palpus reddish, with short, white 

 hair, the palpal organ very broad, much as in P. elegans. Length, 

 5 mm. Differs from elegans in absence of white median stripe 

 on abdomen, and the denser, more variegated fringe to leg I. 



Specimens from San Francisco and Los Bafios, California 

 (E. P. Van Duzee). 



Holotype, male, No. 742, Mus. Calif. Acad. Sci.; E. P. Van 

 Duzee collector, May 23, 1921. 



Type locality, Los Bafios, Calif. 



