6 THE CANADIAN ENTOMOLOGIST. 



quently occurs at considerable altitude. I have taken them thirty to forty 

 feet from the ground. While they sometimes, perhaps as a rule, take 

 advantage of the broken cortex, I have found them where it appeared 

 that they had worked through the same into the soft layer. 



I have found the larva in the following localities : Hastings Center, 

 N. Y. ; Portage, N. Y. ; Buffalo, N. Y. (?) ; Point Abino, Ontario. At 

 the first named place they were found in several instances numerous 

 enough to seriously injure trees of moderate growth.''^ 



I have taken the larvae in autumn from .25 to ,75 of an inch in length ; 

 they finally attain a length of 1 to i.i inch; diameter quite uniform, .18 

 of an inch. Color white ; head light brown, flattened ; first thoracic ring 

 slightly clouded with brown, smooth ; no trace of an anal shield ; true 

 legs scarcely colored, pro-legs prominent crowned with two rows of about 

 eight hooks each. The brown hairs arise from papillae, the base of. each 

 hair being surrounded by a brown annulation. The spiracles are but 

 slightly elliptical, last pair large, placed sub-dorsally. 



Before transforming they prepare a cell in the extruded pitch mingled 

 with their debris ; this they line with silk, but spin no other cocoon. 

 While in their burrows they move through the soft pitch with impunity, but 

 if removed from the same they soon die from the encumbrance of the 

 hardening pitch adhering to them. 



I have found the pupa the last of May ; the moth appears froim the 

 middle to the end of June. It may be t'u^c others come in July and 

 August, for I have found larvae apparently full grown in July. On the 

 15th of July I brought to my rooms devoted to the rearing of insects, 

 some blocks of wood containing such apparently mature larvae, expecting 

 them to complete their transformations in a few weeks at most ; they are 

 still in their pitch cells unchanged (Nov.) Is it a case of retarded devel- 

 opment due to tlie drying of the bark and wood ? 



The pupa has a length of .73 of an inch. Color light brown with the 

 extremities dark. Over the dorsal portion of the abdominal rings are the 

 usual rows of teeth ; those on the anterior margins scarcely extend below 

 the spiracles. The clypeus is without a pointed process ; the medio- 

 dorsal ridge of the thorax is unusually prominent. 



* For definite direction to collectors I mention Mallory, a station ne.ir Hastings 

 Center, on the Syracuse Northern Railway, where they may l>e found in force in pines 

 thirty rods south from the station. 



