1919] Chamberlin: Western Spiders 245 



tudinal black stripe above at base; venter blackish with a ]jalc longi- 

 tudinal line on each side. Posterior row of eyes rather strongly recurved , 

 the median eyes much farther from each other than from the laterals. 

 Area of median eyes longer than wide, a little narrower in front than 

 behind. 



Length, 3 mm. Length of cephalothorax, 1 mm. Length of tib. 

 + pat. I, 1.54 mm.; of tib. + pat. IV, 1.13 mm. 



Type— M. C. Z. 47G. Utah: Fillmore. 



DRASSID.^i. 



Drassodes robinsoni sp. nov. 



Female — Carapace and stenium yellow of slightly reddish-brown cast. 

 Legs yellow. Labium and endites brown, pale at tips. Abdomen 

 yellowish grey, dusky on sides, especially posteriorly; a weakly indicated 

 hcstate outline from base to middle, wnth very faintly indicated chevron 

 lines traceable behind it. Chelicerse deep brown. Lower margin of 

 furroAA- of ehelicera armed with two rather small teeth. Anterior 

 row of eyes procurved; the eyes subequal or the medians a little the 

 smaller; median eyes nearly their diameter apart, half as far from the 

 laterals. Posterior row of eyes procurved; median eyes their larger 

 radius apart, between once and a half their diameter apart from the 

 laterals. Tibiae I and II armed beneath with a single spine between 

 middle and distal end. Posterior tibiae armed with a spine above at 

 base and with one distad of middle. Epigvnum as shown in Plate XVI, 

 Fig. 2. 



Length, 9.6 mm. Length of cephalothorax, 3.9 mm. Length of 

 tib + pat. I, 3.9 mm. ; of tib. -{- pat. IV, 3.3 mm. 



Type— M. C. Z. 418. Utah: Fillmore. 



Dedicated to Mr. Joseph Robinson, of Fillmore, who gave 

 enthusiastic assistance in the collecting of spiders in that 

 region. 



Drassodes gosiutus sp. nov. 



Male^This species belongs in the lapidosus group. It is char- 

 acterized among North American species in wholly lacking a tibial 

 apophysis on the male palpus and in having the lower margin of the 

 furrow of the ehelicera bearing but a single, nodulifonn tooth. Carapace, 

 sternum and legs yellow, the abdomen light grey or whitish. Anterior 

 row of eyes procurved; median eyes larger than the laterals, about 

 thi'ce-fourths, or somewhat more, their diameter apart and their radius 

 from the laterals. Posterior row of eyes much longer than the anterior, 

 obviously procurved; median eyes much larger than the laterals, 

 subelliptic, somewhat angulate, only about their lesser radius apart, 

 more than their long diameter from the laterals. Tibia; I and II armed 

 beneath distad of the middle with a single spine. Metatarsi I and II 

 armed beneath its base with a single spine. The claw of the ehelicera 



