146 Bulletin of the Brooklyn Entomological Society Vol. XIV 
it is sure to occur in the state, but gives no localities. The species 
can now -be definitely recorded in New Jersey from Springfield, 
April 22, Monmouth Junction, March 1, and High Bridge, March 
13, breeding in such fungi as Polyporus gilvus, Fomes bakeri and 
Fomes igmarius. Polyporus gilvus occurs on all kinds of dead 
wood, Fomes bakeri on the trunks of living and dead birch trees 
and Fomes igniarius on the trunks of living deciduous trees. 
The beetle was very abundant in F. igniarius at High Bridge, 
N. J., and Polyporus gilvus at Springfield and Monmouth Junc- 
tion, N. J., and undoubtedly occurs plentifully in such fungi at 
other localities. Overwintering appears to take place in the larval 
and adult stages and pupe can be found during the spring. The 
larvee and adults work in both context and tubes of the fungus 
and pupation usually takes place in the context. When abundant, 
the fungus is reduced to a fine powder mixed with elongate pel- 
lets of black excrement. Emergence takes place either through 
the upper or lower surface of the fungus; in the case of Poly- 
porus gilvus, the lower seems preferred. 
Some of the exit holes in both giluus and igniarius are topped 
with little, truncated hollow, cones. These appear to be built by 
the beetle backing out of its exit hole and voiding pellets of black, 
shining excrement from time to time around the edge of the cir- 
cular opening. The interstices between the pellets become filled 
with borings and the entire mass eventually hardens and becomes 
quite brittle. The height of these structures varies, but as a rule 
approaches the length of the beetle. 
Full-grown Larva: Length 2.4 mm.; width 0.5 mm.; subcylin- 
drical, elongate, sparsely hairy, segmentation distinct, whitish 
except for mandibles and adjacent mouth parts which are dark; 
ocelli lateral, three in a row; head small; first thoracic segment 
twice as wide as head; first thoracic segment twice as long as 
second; remaining thoracic and abdominal segments subequal in 
length; ninth abdominal segment bearing a pair of dorsal, well- 
developed, dark, chitinous hooks with large basal portions, hooks 
curved anteriorly ; legs terminated by fine, sharp hooks. 
Pupa: Length 1.3 mm.; greatest width 0.7 mm. Suboval, white, 
rounded anteriorly, narrow -posteriorly; mandibles prominent, 
reddish; eyes black, numerous distinct ommatidia; body sparsely 
