416 Pomona College Journal of Entomology 



Sclerobunus robustus Packard 

 The anterior femora have three or four little tubercles, each tipped with a 

 stiff hair; each of the four posterior claws have one large projection each side; 

 the male has the second joint of palpus more gibbous than in the female. 

 Length 3 to 4 mm. Known from Mt. Shasta region, also Washington and 

 Colorado. 



Sclerobunus brunneus Bks. 

 Dorsum and legs have many little tubercles, each tipped with a stiff hair ; 

 each of the four posterior claws have two curved projections each side; second 

 joint of palpus not as large as in 5. robustus. Length 2 mm. From Wash- 

 ington. 



Scotolemon 

 The species of this genus often live in caves, and such is the habitat of the 

 one known Californian species. 



Scotolemon californica Bks. 

 No eyes, eye-tubercle not prolonged into a spine. Pale yellowish, dorsum 

 of abdomen rather darker. Dorsum with small pointed granules, those on 

 the abdomen arranged in transverse rows; venter and coxae with similar 

 granules, often tipped with a hair. Palpi large and stout, the joints with 

 pointed processes; legs slender, finely granulate. Length 1.8 mm. From 

 Alabaster Cave, Calif. 



Taracus 

 Two species are known from California. 



1. Body with many small projections, each tipped with a hair sl)iiiosus. 



Body without hair-bearing projections [>alli['cs. 



Taracus spinosus Bks. 

 i'alc yellowish, claws of mandibles reddish-brown; cephalothora.x smooth; 

 just behind the eye-tubercle is a median spine flanked each side by an oblique 

 row of tubercles. Dorsum and venter of abdomen closely covered with pro- 

 jections, each with a stiff black hair at tip. those on dorsum are curved. 

 From Southern California. 



Taracus pallipes Bks. 

 Rather brownish above, mandibles dark ; cephalothorax and abdomen smooth, 

 without projections, the spine behind the eye-tubercle is not flanked each side 

 by a row of tubercles. From .Mt. Shasta, Calif., and also in Washington 

 (Olympia). (Fig. 149.) 



Phlegmacera 

 This genus is readily known by the swollen joints of the pal])!, tin- last 

 joint being very small ; one species has been taken in California. 



