THE CANADIAN ENTOMOLOGIST. 447 



any misgivings about my intentions, caused it to disappear down an 

 adjoining tunnel, whence my forceps finally extracted it. 



In the season just over (1908) I noticed some felled maple and birch 

 on a hill-side seven miles from Port Hope. At the beginning of June I 

 laid chips about two or three of the stump-heads ; on the fallen trunks I 

 found an immense number of a Chrysoboth-is breeding, while under two 

 of my chips on the maple I took two pair of Urographis fasciata, and 

 resting on a stump near by I captured a Leptura biforis. 



About the middle of June my attention was drawn to some white pine 

 felled in the winter among some woodlands known locally as Pine Grove. 

 There were about eight trees in all, lying on the ground within a space of 

 about a mile ; on the trunks and branches were crawling a number of 

 small dark Ckrids, with a mark of crimson and two marks of white on each 

 elytron ; there were also two sorts of weevil abundant under chips of 

 wood on the ground, and many Biiprestids visiting the logs; but, in special, 

 on the trunks, limbs and larger branches there were J/(?;/^/;(7;;/w/ breeding; 

 in about six visits I took well over 100 specimens, and my fellow collector 

 continued to find longicorns up to the 2olh of July or later; our combined 

 captures would amount to 250 beetles. The great majority of these were 

 Monohammus scutellatus, oi\\\'\\z\\\ took 100, mostly in pairs; I took 

 besides eight or ten specimens of the large gray Monohavitnus (whether 

 titillatoi- or confusor, I am not sure), and four of both sexes of the rust- 

 yellow species; we also got several specimens of a stout gray beetle 

 resembling Urographis^ but without the extended ovipositor, and a itw of 

 a gray species of delicate structure and extremely fine antennae (perhaps 

 Liopus) ; about the middle of July my friend took some 12 specimens of 

 Leptostyhis parvus. All this on some 10 trunks of newly-felled pine. 



Our experience raises a question as to the length of time required by 

 the larvae to mature. There was a tree among these others that had been 

 blown down early in 1907, and was thus in its second season ; it was full 

 of lioles, most of them quite fresh, from which mature insects had escaped; 

 we could hear larvae at work during June inside the log ; but we did not 

 see any beetles breeding or laying eggs on the bark, as they were doing 

 on all the fresh-fallen trees. Unfortunately, most of these trees have since 

 been removed. I am inclined to think that the drier the wood is, the 

 longer the larva takes to reach its full growth, and that if the larva hatches 

 in fresh wood it can mature in a single season ; I should think this was 

 true of the sctitellatiis anyway, even if confusor and titillattis require 



