1940] New North American Diplotaxis 137 
medially, anterior margin subtruncate medially, angles 
evenly rounded, margins shallowly reflexed. Pronotum as 
wide as humeral angles of elytra, side margins evenly 
rounded, widest about middle; anterior margin nearly as 
wide as basal margin; disk with large punctures separated 
by about their own widths, more dense laterally, without 
lateral impressions. Elytra with sides subparallel to apical 
sixth, evenly rounded to apex, margins clothed with short 
erect pile ; humeral and apical umbones prominent ; surface 
irregularly punctate, punctures separated by about twice 
their own widths, costae obscure, not elevated. Undersurface 
clothed with short golden pile; anterior tibiae tridentate, 
basal tooth median in position, hind femora sparsely punc- 
tate throughout outer surface, hind coxae sparsely punctate 
on apical half, posterior tarsi equal in length to hind tibiae. 
Length 9 mm., width 4.5 mm. 
Holotype in the writer’s collection, taken in Cedar Canyon, 
Providence Mountains, San Bernardino County, California, 
June 10, 1940 by W. F. Barr on Franseria eriocentra Gray. 
Five paratopotypes deposited in the collections of W. F. Barr 
and the author. 
Diplotaxis arta Cazier is most closely allied to Diplotaxis 
fimbriata Fall but can be distinguished from that species by 
its narrower pronotum, subparallel elytra, prominent hu- 
meral umbones, by having the pronotum and elytra fimbriate 
with short golden hairs and by having the metasternum 
longer. The metathoracic wings in this species are more 
highly developed than those of D. fimbriata. From D. pacata 
Lee. it can be distinguished by its more parallel form, larger 
and more densely placed punctures throughout, by lacking 
the lateral pronotal impressions, by having the side pronotal 
margins evenly rounded rather than subangulate and by its 
indistinct elytral costae. It can be distinguished from D. 
brevidens Lee. by its subtruncate anterior clypeal margin, 
evenly convex and wider front of the head, by its less angular 
side pronotal margins and by its less hairy posterior tibiae. 
Diplotaxis lingula Cazier, new species 
Medium sized, reddish-yellow; upper surface glabrous; 
labrum broadly accurately emarginate ; mentum subhorizon- 
tal and nearly flat posteriorly, declivous in front, declivity 
