ZooL.— Vol. III.] BANKS— ARACHNIDA FROM CALIFORNIA. 35 1 



ULOBORID^. 

 Uloborus calif ornicus n. sp. 



Plate XXXIX, Fig. 35. 



Length ? 4 mm., tibia plus patella i, 2 mm. Cephalothorax dark brown 

 or reddish, paler behind; leg i, femora brown (or reddish), with a pale spot 

 below beyond middle, patellce dark, tibia dark, base narrowly pale, metatarsi 

 pale, with apical half dark (reddish); leg 11, pale, apex of femora, most of 

 patellae, apex of tibise and base and apex of metatarsus dark (or reddish); 

 hind legs, femora dark (or reddish), with a pale ring beyond middle, patella 

 dark, tibiae with a pale ring at base and before middle, and a dark ring on 

 middle and apex of metatarsus, and often a band on the tarsi; sternum dark; 

 abdomen dark on sides, pale above, more or less marked with dark spots, 

 venter paler than sides, with a dark mark before the spinners and a small 

 yellowish spot each side of it. Of the usual shape, the abdominal humps are 

 more prominent than in the northern specimens of U. pluniipes, none of the 

 specimens show any trace of a brush on anterior tibiae, one small spine above 

 on tibia i beyond the middle, Epigynum shows two pale processes, sud- 

 denly narrowed on the inner side, convex outward. 



St. Helena, Napa County, July (Fuchs). Readily sep- 

 arated from the eastern species by the dark apical half of 

 the anterior metatarsi. 



THOMISID^. 



Xysticus calif ornicus Key ser ling. Plate xxxix. Fig. 27; 

 Plate XL, Fig. 41. Keyserling, Spinn. Amer. i, 

 1880, p. 37. 



Coulterville, Mariposa County, July (Eisen) ; Dow- 

 nieville, Sierra County, August (Fuchs) ; Santa Rosa 

 Island, July (Eisen) ; Los Angeles (Davidson) ; Clare- 

 mont and Elsinore (Baker). 



Xysticus formosus Banks. Proc. Acad. Nat. Sci. Phil. 



1892, p. 56. 



One female from Mt. Shasta (Lembert). 



Coriarachne brunneipes Banks. Journ. N. Y. Ent. Soc. 



1893, p. 133. 



One male from Mt. Shasta (Lembert). 



