appearance of having a round head, the body being somewhat 

 narrower, tapering slightly toward tho anal segnent. The 

 mature brown beetle is nearly an inch in length with long 

 antennae. The eggs are laid in crevices of the bark. The 

 larva b^rec through the inner layers of the bark in devious 

 directions, apparently without any particular design such es 

 is common to the bark-boring beetles. The sapwood is some- 

 times slightly scored by these galleries. When ready to pup- 

 ate it prepares a cell in the cork bark, emerging on the ad- 

 vent of warm weather. The adult beetle, may be found in early 

 spring by slicing the bark from the surface of d3?-ing firs. 

 The irregular galleries are always packed with coarse saw- 

 dust, and the exit holes round or nearly so. This species 

 Peeim to be confined to the Sierras. 



ECOOPTOGASTER 3U3SCAB3R . LEO. 



(The Fir Girdler. ) 

 Hosts - Red and white fir. 



This is distinctly a fir beetle and especially 

 destructive to saplings, poles and tops of mature trees. 

 While showing a preference for thin bark, it often breeds 

 v.r.(lJr ccrk-'SCaled bark, particularly in the case of dov/n 

 material. Like all the other bark beetles which kill trees, 



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