260 
NOTES ON THE HABITS OF SOME CALIFORNIA COLEOPTERA. 
By D. W. CoQuimLLETT, Los Angeles, Cal. 
Tritoma californica.—Found several larve in lamelle of fungi on a 
rotten willow stump February 24. Beetles issued April 29. 
Anthaxia cneogaster.—Found this beetle in a burrow beneath the bark 
of a dead and dry branch of Juglans californica February 6. In a sim- 
ilar situation was a nearly grown larva, evidently of this species. 
A second beetle was in its burrow in a dead and dry branch of Jug- 
lans californica March 9; it was in the solid wood, and its burrow was 
next to and at right angles with the surface. 
Hydnocera scabra.—Two larve were found beneath loose bark on an 
apple tree infested with Woolly Aphis January 16. I placed in its cage 
two Tineid larve, which it attacked and extracted their juices. Spun 
in bottom of box a thin white cocoon, through which the pupa is plainly 
seen. Pupated May 10; beetle May 30. Found a pupa among dead 
leaves in crotch of orange tree June 4, and the beetle issued June 13. 
— One in cocoon of Carpocapsa pomonella, beneath loose bark on an apple 
tree, March 24. 
| Hedobia granosa.—Found a tough gray elliptical cocoon 3 by 5™™ 
long, beneath loosened bark of a dead, dry branch of Juglans californica 
February 7; the beetle issued March 8 through a large irregular hole 
on one side, just before the end. 
Vrilleta ecpansa.—Found many larve in dead and dry wood of Quer- 
cus agrifolia September 22. Two living beetles were found in the 
breeding can February 21, and twelve more March 26. 
Sinoxylon declive.—Two beetles of this species were in the can con- 
taining orange wood July 20 (the same wood as that from which Lyctus 
striatus mentioned below were bred); five more July 26, three of them 
in their burrows in the wood; these burrows usually extend lengthwise 
with the grain, are cylindrical, and packed firmly with gnawed wood. 
In these burrows I found larve which agree closely with those of Psoa 
maculata. 
Mr. Edwin C. Van Dyke informs me that he has bred this species 
from dead Acacia wood and also from Umbellularia californica. The 
pupa is Similar to that of Psoa maculata. 
Before pupating the larva gnaws a burrow to the surface nearly at 
right angles to its regular burrow and takes upa position about three- 
fourths of an inch from its mouth, packing it firmly on either side, and 
pupating in the cell thus formed. In the burrow the larva presses the 
hind half ofits body against the under side of the front half, pressing the 
legs forward. Ifound the pupa in the orange wood July 27. Mr. Com- 
pere, of Los Angeles, informs me that these beetles sometimes bore 
into the pith of rather large sized rose bushes that have been cut off 
