H. C. FALL 347 



lines. Judging from analogy the eyes must ])e quite closely 

 approximate in the male. As frequently occurs, two or three of 

 the discal elytral intervals are more regular and entire, and these 

 attract the eye; this may not be true in the male, it being espe- 

 cially characteristic of the females in numerous species. 



28. Pachybrachys livens LeConte 



Pale yellow, fineh' alutaceous, scarcely or foc^bly shining, 

 punctures not or but little darker, prothorax with a median, 

 rufo-testaceous or pale brownish stripe; ocular lines distinct and 

 distant from the eyes; front claws of male not apprccialjly en- 

 larged. Ave. length 2.7 mm. California. 



Head rather sparsely punctate, spots small and pale excei)t that on the 

 vertex, which is usually well developed and pale brown, the others often nearly 

 or quite obsolete. Eyes separated by twice (cf ) or about three ( 9 ) times the 

 length of the basal antennal joint. Antennae long in the male, attaining the 

 middle of the abdomen, in the female reaching about to the hind coxae, almost 

 entirely pale, the apices of the outer joints dusky. 



Prothorax moderately transverse, sides moderately convergent from the 

 hind angles, feebly very obtusely subangulate at about the basal third, punctu- 

 ation not very close, side margins smooth, a rufo-testaceous or i)ale brown 

 entire nearly parallel sided median stripe occupying a little less than the middle 

 third; lateral spots wanting. 



Elytra entirely yellow, punctures rather dense and confused in a moderate- 

 sized baso-sutural triangle, the striae elsewhere fairly regular, lightly impressed 

 laterally and posteriorly; submarginal stria nearly straight; marginal inter- 

 space with one or two punctures near the base; shield small and inconspicuous. 



Pygidium entirely yellow; body beneath more or less reddish brown with the 

 usual pale margins; legs entirely pale. 



Length 2..3 to 3 mm.; width 1.2.5 to 1.65 mm. 



Distribution. — California: Colorado River on Salix (type); Yuma, July 3; 

 Pomona, June 11; Los Angeles, Aug. 16 (Wickham); Tulare Co. (Leng Coll.); 

 Kaweah (Hopping); Los Angeles Co. (Coquillett in Nat. :\Ius. Coll.); Bishop, 

 June (Wickham). 



Jacoby records this species from Mexico, but some of the speci- 

 mens which he so identifies recently sent me, prove to be jacobiji 

 Bowd. 



29. Pachybrachys mercurialis new species 



Light yellow, pale brown punctate, integuments polished, 

 elytra immaculate, prothorax with small diffuse pale l)rownish 

 clouds, the three representing the basal extremities of the M 

 most evident; front claws of male not enlarged. Ave. length 

 2.75 mm. California and Utah. 



TRANS. AM. ENT. SOC, XLI. 



