COLEOPTERA OF SOUTHERN CALIFORNIA. 113 



Sericosomus. S. debilis is rather common; taken by 

 beating and sweeping, in the foot-hills near Pomona, 

 April. I am unable to separate flavipennis Mots from 

 debilis. The former name is in general use for the 

 smaller, paler specimens, and the latter for larger speci- 

 mens with the thorax more or less dark; there are, how- 

 ever, all degrees of size and color between the extremes. 



Corymbites. This genus is numerously represented 

 in the State, but very few species occur in our district. 

 C. maurus is rare in the foot-hills near Pomona in June: 

 jaculus is described from San Diego, but also occurs in 

 the north (Sylvania): of fallax I have seen specimens 

 labeled "So. Cal.," but have never taken the species 

 here myself; it is certainly more common in the north. 

 I have seen specimens of pruininus and leucaspis labeled 

 southeastern California in the Horn Collection. Of 

 the other species occurring within the State, cribrosus, 

 semivittatus , rotundicollis and conjungens have been taken 

 about San Francisco, the latter also in the middle 

 Sierras; anthrax and colossus are from the central region; 

 monticola, fraternus, ceripennis, carbo and obversus from 

 the middle or northern Sierras; nigricollis, one example 

 from Lake Tahoe; edwardsii from Santa Cruz and Placer 

 counties and north; breweri from Visalia and north; 

 fusculus, caricinus, xanthomus, and opaculus from the 

 northern region only; obscurus, teres and rupestris from 

 "Cal." without definite locality. Besides these there 

 are several undescribed species in collections. 



Oxygonus. 0. ater is described from Amador Valley, 

 central California. 



Asaphes. A. morio and A. dilaticollis are rare in 

 the San Bernardino Mountains in July and August: 



8 August 10, 1901. 



