196 THE CANADIAN ENTOMOLOGIST. 



lostis on cherry, which shows a somewhat similar distribution of the larval 

 mines, which emerge and diverge from one point of the mating-chamber ; 

 but the main galleries are reduced to almost nothing, and the normal mine 

 of this species, as figured by Ratzeburg, shows nothing of the kind. 



Of course it is entirely possible that the species which constructed 

 these mines is still Hving and doing similar work. If so, it is probably a 

 northern species, and my object in publishing this account is to ask if any 

 one in Canada can produce similar borings on juniper or some allied 

 conifer, made by existing beetles. I have for years searched for such in 

 vain, on every occasion which oftered. The nearest approach to it that 

 I can find is in the mines of Phlceosinus dentattis (Say), figured by 

 Packard. 



NOTE ON DICERCA DIVARICATA, Say. 



BY F. 1!. CAULFIELD, MONTREAL, P. Q. 



On the 1 2th of last June I observed a female of this species on a dead 

 Maple. She was creeping down the tree, feeling the interstices of the 

 bark with her ovipositor, but apparently without finding a suitable place, 

 as no eggs were deposited so far as I could perceive. On the 19th, I 

 observed another female, also on Maple. She was resting head down- 

 wards with the terminal segments of the abdomen slightly inclined, the 

 ovipositor extended at a right angle with the body and placed in an old 

 hole of some borer. She remained in this position for several minutes, 

 the ovipositor being alternately dilated and contracted as if eggs were 

 passing through. After she had gone away, I examined the place and 

 found that, at a Httle distance from the surface, the hole was stopped with 

 a smooth grayish substance. Not having a knife about me, I tried to 

 remove it with a stalk of grass, but only succeeded in breaking it up into 

 a yellowish fluid. I have no doubt that the creature deposited an egg, or 

 eggs, and covered them with a kind of cement. Whether this is the 

 usual manner in which the species oviposits I cannot say. The only 

 reference that I have seen is in Packard's Insects Injurious to Forest and 

 Shade Trees," where he says, speaking of insects attacking beech : — 

 " Observed by Mr. George Hunt laying its eggs in the bark in July." 



