396 PROCEEDIISrGS OF THE NATIONAL MUSEUM vol.88 



Elytra about 1.4 times as long as wide, slightly wider than prono- 

 tum, with sides straight and subparallel on anterior two-thirds, 

 moderately broadly rounded behind, basal margin strongly elevated 

 in scutellar region, including the fourth interspace at each side, with 

 four or five serrations or crenulations on each elytral margin, not 

 forming a continuous line; striae impressed, the first more deeply, 

 nearly as wide as interspaces, punctures close and of moderate size; 

 interspaces moderately convex, finely rugose punctate, each with a 

 few feeble granules accompanying a median row of slightly coarser 

 punctures, clothed with narrow recumbent scales, prevailingly cinere- 

 ous on the sutural interspaces and on the basal third, somewhat 

 fulvous on the posterior disk and declivity; each interspace with a 

 median row of erect, spatulate, fulvous setae; each elytron with a 

 group of coarse, fulvous setae behind the crenulate anterior margins. 

 Declivity rounded, unmodified, first striae impressed as on disk. 



Ventral surface piceous-brown, shining, thinly clothed with nearly 

 white, usually bifurcate, recumbent scales, which on the last three 

 abdominal segments are more nearly erect and are mixed with 

 fulvous setae. Foretibia (fig. 18, j) not so strongly widened distally 

 as in most other species, with 6 long, slender teeth on outer margin. 



Male. — Similar in size and habitus to female; with frons deeply 

 concave and bordered on sides and above by numerous long setae; 

 pronotum with posterior and anterior groups of asperities smaller 

 than in female, sometimes lacking; with the tufts of hairs near 

 anterior margin much longer, penicillate; setae on venter of last 

 abdominal segment parted in median line. 



Location of type material. — Holotype, allotype, and 25 paratypes 

 in collection of C. R. Bruck. Paratypes: California Academy of 

 Sciences, San Francisco; Canadian National Collection, Ottawa, 

 Canada ; collection of A. T. McClay. 



Remarks. — This is a rather widely spread species and apparently 

 is not confined to one host. Renocis 'penicillatus was described from 

 material obtained from Rhus integrifolia and R. ovata in southern 

 California. The writer has studied four specimens from Brack's 

 series, one obtained through the kindness of Dr. W. Dwight Pierce 

 of the Los Angeles Museum and three specimens kindly lent by 

 Prof. J. N. Knull from his own collection. These specimens are 

 identical in all essential respects with more than 50 specimens in 

 the National Museum from Arizona, Utah, and Colorado, collected 

 by Hubbard and Schwarz, Hopkins, Webb, Wickham, and Harvey, 

 and four specimens collected from Rhus ovata at Ensenada, Lower 

 California, by F. P. Keen. Only in the last case is the host cited 

 specifically, but in the Hopkins series from Flagstaff, Ariz., it is de- 

 scribed as a "shrub resembling currant," probably Rihes sp. 



