2Q4 NEW YORK STATE MUSEUM 



Fully developed beetles were found in many of the side galleries, 

 while numbers were empty. 



The burrows of these beetles are about medium size, and the brood 



chambers are placed less than their diameter apart, in the specimens 



examined. 



Xyloterus sp. 



This rather stout species was taken Aug. 20, 1900, from the trunk of 

 a partly decaying paper birch at Saranac Inn. There were many fully 

 developed beetles in the brood chambers. The same insect, in all proba- 

 bility, was found Aug. 23 working in the dead, nearly dry limb of a yellow 

 birch at Axton. 



Description. The head, prothorax and ventral surface of this beetle are 

 black. The wing covers are a dark, sooty yellow bordered with black. 

 It is a rather stout species a little over '/^ inch in length. The legs vary 

 from an amber to a black, the tarsi usually being amber. 



The burrows of this species penetrate, like others, some little distance 



before branching. The brood chambers are alternating and about yk 



inch apart. 



Xyloterus sp. 



The work of a member of this genus was met with by the writer at 



Axton, Aug. 23, 1900, in a dead limb of a yellow birch. The tree was 



nearly dry when it was discovered. The burrows of this species are of a 



medium size and the brood chambers in the specimen examined were 



placed at a distance greater than their diameter from each other. 



Xyloterus sp. 



A cylindric, stout brownish black beetle, makes somewhat large gal- 

 leries in stumps of poplar, P o p u 1 u s g r a n d i d e n t e. 



This species was met with by the writer in August 1900, at Axton, 

 where it was running galleries in a stump of a tree cut about a year ago. 

 This species is a large, rather stout one, and its galleries of a corresponding 

 size, being nearly 3/32 inch in diameter. 



