THE CANADIAN ENTOMOLOGIST 173 



4. Derohrachus geminattis LeConte. 



This was taken at Palm Springs, Riverside County. 

 Also present in Lower California. May 30. 



5. Prionus californicus Motschulsky. 



This is found throughout the State and works on the 

 roots of the coast live oak, Quercus agrifolia. Com- 

 mon. May 22-October 8. 



6. Tragosoma depsariiim Linne [harrisii Leconte]. 



This works on tamarack and yellow pine in the 

 Sierras, and is also found about other coniferous trees 

 on several of which it is supposed to work. Taken by 

 the author at Donner Lake beneath the bark of Pinus 

 ponder osa. July 2. 



Tragosoma pilosicornis Casey. 



This is nothing more than a form of T. depsarium. 

 Found on Mount Diablo. 



7. Asemum. atrum Eschscholtz. 



This is very common in the northern part of the State 

 and in the Sierras. This opaque species breeds in the 

 Douglas Spruce (Pseudotsuga taxifolia). I took it 

 abundantly early in July at Donner Lake and Tahoe 

 Tavern. July 3-28. 



8. Asemum nitidum LeConte. 



At Monterey this works on Pinus radiata. It is also 

 found in the Middle Sierras, Yosemite, and Tahoe. I 

 have taken it along with atrum at Donner Lake and 

 Tahoe Tavern. June 17-July 2L 



9. Nothorina aspera LeConte. 



This most probably works in coniferous trees. Found 

 in Siskiyou County. 



10. Criocephalus prodnctus LeConte. 



This beetle is found commonly throughout the northern 

 part of the State, though but few specimens have been 

 taken in Southern California. It works on Pseudotsuga 

 taxifolia, and is supposed to work on grape-vine roots 

 also. May 7-August 2. 



