58 CALIFORNIA ACADEMY OF SCIENCES. 



low altitudes, but more plentiful in the higher parts of 

 the Sierras: infuHcatus, common: dissimilis, San Fran- 

 cisco and north. 



Dactylosternum. — D. cacti, one example, Los Angeles 

 County (Van Dyke); occurs abundantly in decomposing 

 cactus (Cereus) in Arizona, but is thus far rare in 

 Southern California. 



Cercyon. — G. Jimbriatus, everywhere abundant along 

 the seashore in decomposing seaweed: luniger, much 

 less frequent in same situations, and on Catalina Island, 

 where fimbriatus has not yet been found: fulvipennis, 

 common in excrementitious matter: lugubris, not rare, 

 about the roots of grass in marshy places, and in decay- 

 ing vegetable matter: nigriceps, rare, San Diego, Pomona. 



C. depressus, quisquilius, lateralis, tristis and navicu- 

 lar is are quoted from California in Horn's Revision. 



Megasternum — I\f. posticatmit, rather common in de- 

 composing vegetable matter, especially along the moun- 

 tain streams. 



SILPHID.E. 



Necrophorus. — lY. marginatus, rare; one specimen 

 taken at Riverside, June: guttula, numerous on San 

 Clemente Island, May and June, rather scarce on the 

 mainland: pustiilatus var. nigritus, not rare on both 

 islands and mainland; numerous specimens taken in 

 electric^ light trap at Pasadena, April and May; var. 

 inelsheiiiieri is northern. 



Silpha. — *S'. lapponica and *S'. ramosa are generally 

 common: opaca, one specimen mentioned by Dr. Horn 

 as taken near Mono Lake. 



Necrophilus. — N. hydropkiloides , from middle and 

 northern part of State. 



