COLEOPTERA OF SOUTHERN CALIFORNIA. 133 



(Le Conte): luteolectus, Riverside and Yuma, July; 

 Palm Springs, April: palliatus, not rare on a species of 

 Dalea at Yuma early in June. Our commonest species, 

 which occurs pretty nearly everywhere, and most fre- 

 quently on oaks, is not yet identified; it is possibly not 

 different from obsoletus, which was described from Cape 

 San Lucas, but it would not be proper to so call it with- 

 out careful comparison with the type. There appear to 

 be two other allied species in my collection from 

 Pomona and Pasadena, but they are not sufficiently 

 strongly characterized to warrant their description in 

 advance of a general synopsis of the genus. H. integer 

 is represented by two examples taken by me at Lake 

 Tahoe. 



Coenocara C. californica, one example from the 

 Sierras near Pomona, September: occidens, described by 

 Casey from central California. 



Ptilinus. P. basalis, San Diego (Le Conte): rami- 

 cornis has been beaten from Quercus engelmanni at Pas- 

 adena late in May, and also occurs in the San Bernar- 

 dino Mountains: ftavipennis occurs in the southern 

 Sierras, in Los Angeles and San Bernardino counties: 

 acuminatusis described from the Santa Cruz Mountains. 



Euceratocerus. E. pleuralis, E. macer, and E. sagi- 

 natus are described by Casey from California; the first 

 mentioned from the Santa Cruz Mountains, the others 

 without definite locality. 



Sinoxylon. S. sericans, Colorado River: sextubercula- 

 tum, Yuma; "probably depredates on mesquite" (Horn): 

 declive, Pomona, August and September; numerous 

 specimens taken on the windows of a winery; one 

 specimen was taken on San Nicolas Island, May 23: 

 suturale, rare at Pasadena (Fenyes). 



