294 ■"•EW VORK STATE MUSEUM 



Fully developed beetles were fouml in many of the side t^alleries, 

 while numbers were empty. 



The burrows of tiiese beetles are about meilium size, and the brood 



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



examined. 



Xyloterus -^p. 



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 tlie Ijrood chambers. The same insect, in all proba- 

 bility, was found Aug. 23 working in the dead, nearly dr\ liml) of a yellow 

 birch at A.xton. 



Description. The hcatl, ])rnihorax and vtmtral 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 l'^ inch in length. The legs vary 

 from an amber to a black, the tarsi usuall\- being amber. 



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



before branching. The brood chambers are alternating and about yi 



inch a])art. 



Xyloterus sp. 



1 he work of a member ol this genus was met with by the writer at 



Axlon. .\ug. 23, igoo, in a dead liml) of a yellow birch. The tree was 



nearl)' tlr\' when it wis disco\'ered. The burrows of this sjjecies are of a 



medium size and the brood chamlxrs in the specimen examined were 



|)Iaced at a distance greater than tlniir diameter from each other. 



Xyloterus s]). 



A c\lindric, stout brownish bhu:k beetle, Uiakes somewhat large gal- 

 leries in stumps of po|)]ar, P o |) u 1 u s g r a n did • n t e. 



This species was nn't with b\' the writer in August 1900, at Axton, 

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

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

 size, beintr nearl\' ? ,2 inch in diameter. 



