136 CALIFORNIA ACADEMY OF SCIENCES. 



no other record of its occurrence within our district; 

 El Monte (Los Angeles County) teste Rivers. I know 

 of no record of any other species of this family hav- 

 ing occurred in our district. In the genus Platy- 

 cerus, oregonensis, agassii, calif ornicus, parvicollis, paciji- 

 cus, thoracicus and chalybceus are all Californian. P. 

 oregonensis has occurred as far south as Tejon, but the 

 true habitat of the genus is more northern. Ceruchus 

 punctatus and C. striatus t occur in middle and northern 

 California. 



Canthon. G. simplex is widely diffused and generally 

 common; the variety humeraiis is rare. It is probable 

 that the varieties corvinus and militaris occur in our 

 region but I have no specific reference to the fact. C. 

 Icevis and C. perplexus are recorded respectively from 

 " So. Cal." and " Gal.," but there can be little doubt 

 that they were taken in the desert regions of the south- 

 east. 



Copris. C. mcechus, Los Angeles; one example taken 

 by Dr. W. J. Karlsioe (fide Lmell). 



Oniticellus. 0. calif ornicus, Shasta region; very 

 scarce. 



JEgialia. A. conferta, Pomona, Riverside, etc., espec- 

 ially in early spring, when it may frequently be taken 

 on the wing: latispina occurs with the preceding and 

 is of about equal frequency: crassa, not rare along the 

 seacoast (Santa Monica, Redondo, Monterey): cylindrica 

 occurs in Marin County: lacustris, middle Sierras: 

 blanchardi, Mendocino County. 



Psammodius. P.nanus, a little species sometimes 

 seen flying about the streets of Pasadena in large num- 

 bers on warm evenings; September to May; it is widely 



