COLEOPTERA OF SOUTHERN CALIFORNIA. 123 



Pomona and Pasadena, by beating willows in May: in- 

 genuus is not common; Pasadena, May: ochropus is de- 

 scribed from San Diego: lautus is reported from various 

 localities in our region: fraxini is northern: trans- 

 tnarinus and grandicollis occur in the middle and north- 

 ern Sierras. 



Polemius. — P. languidus is described by Horn from 

 the vicinity of San Diego. 



Ditemnus. — D. obtusus occurs at Riverside in May, 

 but is uncommon. 



Malthodes. — M. laticollis and M. fusculus are common 

 at Pomona, Riverside, Pasadena, etc., on flowers and 

 various trees and shrubs: fr<igilis is described from 

 "Cal.;" I have not yet recognized it. 



MALACHIDiE. 



Collops. — G. niarginicoUis was described from San 

 Diego, in which vicinity it appears to be commoner 

 than elsewhere; I have taken it sparingly at Pomona in 

 April, May and September: cribrosus occurs on the ocean 

 beaches and on the adjacent sand dunes; it is especially 

 common during April and May at Redondo, and I have 

 also taken it in August at Santa Monica: argutus is not 

 rare at Pomona and Pasadena, and I have seen speci- 

 mens from San Diego and also from Sonoma and Lake 

 counties: piuidulatus is perhaps our rarest species, single 

 specimens from Pomona and San Diego being all I have 

 seen from our district: marginellus is not common; I 

 have taken it at Pomona and San Bernardino in August: 

 insulutus is described from California, but I have seen 

 no specimens from our section. Two females of an 

 apparently undescribed species have been taken at 

 Pomona. 



