PLATE XIV. 



Borings op Scolttidae. 



Drawn by A. D. Hopkins. 



Pig. 1. Phloeosinus sqiialidens, in Juniperus or Thuja, from inter- 

 glacial clays. Natural size ; the outlines of the galleries on the right are 

 slightly enlarged. 



Fig. 2. Transverse section of 1, showing position of pith and indi- 

 cating that the flattened condition is at least partially due to a more 

 rapid growth of wood on one side than on the other. 



Fig. 3, Galleries of Phloeosinus punctatus in Chamaecyparis law- 

 suniana. 



Fig. 4, 4. Abnormal forms of nuptial chambers of Phloeosinus den- 

 tatus in Thuja plicata. 



Fig. 5. Normal form of nuptial chamber of same in same. 



Fig. 6, 6. Normal forms of nuptial chambers of Phloeosinus punc- 

 tatus in Juniperus virginiana. 



Fig. 7. Abnormal form of nuptial chamber of same in same. 



Pig. 8. Normal form of nuptial chamber of Phloeosinus cristatus in 

 Sequoia. 



Fig. 9. Abnormal form of nuptial chamber of same in same. 



