COLEOPTERA OF SOUTHERN CALIFORNIA. 147 



Xylotrechus. X. nauticus, San Diego, Los Angeles, 

 Pomona (August). According to Blaisdell, "Abundant 

 about live-oak groves during July and August. The 

 larvae and pupae have been taken from the dead branches 

 and trunk of the oak. The beetle is both diurnal and 

 nocturnal in habits, becoming active near the middle of 

 the afternoon and continuing so until late in the even- 

 ing." The larvae of this insect have also been found 

 destructive to logs of Eucalyptus globulus.* X. oblit- 

 eratus is not infrequent about willows, in various locali- 

 ties in Southern California and on Santa Catalina 

 Island, June: insignis is the female of this species, as I 

 am informed by Mr. Fuchs, a fact I had suspected, but 

 of which I had no positive evidence: undulatus and 

 annosus have been found in the north: planifrons 

 occurs near San Francisco, where the larvae may be 

 found in dead branches of willow (Rivers). 



Neoclytus. Several examples of irroratus have been 

 picked up on the streets of Pasadena during early Sept- 

 ember by Mr. Daggett, and I have similarly found it 

 at Santa Barbara late in August: conjunctus, muricatu- 

 lus, balteatus and interruptus inhabit the middle or 

 northern parts of the State. 



Atimia. A. dorsalis, Riverside, May and October; 

 uncommon; occurs also in the Sierras, Placer County, 

 April (Van Dyke): confusa has been found in California 

 also, according to Henshaw. 



Desmocerus. D. cribripennis, "So. Cal.;" the species 

 must be exceedingly rare: californicus has been taken in 

 Los Angeles County, on elder, but is, like the preced- 

 ing, very scarce: auripennis has not occurred in our 



* See Blaisdell's account, " Insect Life," Vol. V, p. 34. 



