THE QENUS DENDEOCTONUS. 
13 
and both the pupal cells and larval mines are exposed in the inner 
bark. 
In species 12 to 23, so far as observed, the egg galleries are longitu- 
dinal, straight to slightly winding, with the larval mines either in 
groups or connected, or they form a broad common chamber, and 
all are exposed in the inner bark. The pupal cells are located at the 
ABDOMEN 
on; t? "is ss- V ' 
p ^ < jti . 
2. s p. -^ r 
end of the larval mines or in the larval chambers and are usually 
exposed. 
In species 12 to 13 the egg galleries are straight or slightly winding, 
sometimes branched, the larval mines are in groups and exposed in 
the inner bark, and the pupal cells are exposed or concealed. 
