26 THE EEPOKT OF THE No. 36 



fallen or felled trees of this species. I had taken thirteen specimens in 1916 on 

 billets of poplar in a wood pile; there is no doubt that the insect breeds in the 

 balsam po])lar with us; a curious thing about my specimens is that they have dis- 

 tinct traces of ciliate fringe under the antennas, especially on the third Joints ; many 

 of them are as heavily fringed as Hyperplatys. 1 have specimens of Liopus alpha 

 and cinereus captured in Ontario that are similarly adorned. Another peculiar 

 feature is the colour; all my specimens of L. variegatus (var. ohscuriis?) are very 

 dark grey, almost black. I strongly suspect that both ciliation and " melanism '"' 

 are a question of latitude. For that reason I find the proportiongjte length of basal 

 joint to the other joints in the hind tarsi a better test of generic character. 



Examination of staghorn sumach during the first part of July resulted as 

 follows: After July 5th many specimens of Hyperplatys were captured; a single 

 specimen of Goes oculata was taken on a dead limb; a single specimen of 

 Leptostylus macula on a bruised shoot; a specimen of Toxotus schaumii on the 

 foliage; a specimen of Lepturges signatus and about twenty specimens of Liopus 

 alpha on the stems. 



On July 11th while looking over some newly lopped branches of basswood on 

 the edge of a grain field I captured Hoplosia nubila, and a specimen of that dainty 

 little insect with the flying hairs — Eupogonius suharmatus. This last I have never 

 found in Ontario except on basswood; more than ten years ago I captured two in 

 the Eideau district on basswood; three or four years ago I took more than a dozen 

 on basswood in the Niagara Glen (towards the end of July), and a few days later 

 two specimens near Peterborough. I have never seen basswood given in any book 

 as the insect's host, but generally elm. 



Just after the middle of July we went into our usual camp on Cache Lake, 

 Algonquin Park. I was greatly disappointed not to find any more specimens of 

 Leptura pleheja this season on the spiraea blossom; the weather was not favorable 

 for sun-loving insects that frequent flowers, but in other respects the captures this 

 year were exceptionally good. And even in the matter of L. pleheja I have, as it 

 proves, been extremely fortunate this summer of 1917. Towards the end of July, 

 during a succession of very hot days, I made on my boathouse window several 

 interesting captures including Leptura sex-maculata, L. siibhamata, L. hiforls and 

 a small black longicorn that I bottled for Typocerus luguhris. On removing this 

 last from the jar of moist sawdust in September, I found it had the antennge 

 annulate with pale brown and devoid of poriferous spaces ; it proved, in fact, to be 

 a Leptura, and almost certainly the male of L. pleheja. When compared with 

 the four other specimens (all apparently female) of this beetle in my cabinet, the 

 insect has two features of special interest, viz.: (l)Its much smaller size, (2) its 

 entirely black abdomen, there being, on the under side, no traces of the brown outer 

 segments that characterize the female. 



Two species of Acmo'ops were taken on white pine in the third week of July ; 

 a specimen of Leptura sex-maculata on July 18th; a specimen of Leptura pedalis 

 and several of L. clirysocoma (on spiraea) in the fourth week of July ; also an 

 unidentified species of Leptura (on yarrow). During the last week of July and 

 for three weeks of August Leptura suhhamata was found abundant on spiraea and 

 elsewhere. After Aug. 5th Leptura canadensis became common, both sexes being 

 taken on spiraea blossom and on dead pine and balsam. I notice that these sun- 

 loving Lepturids which frequent blossoms seem to prefer standing to fallen timber, 

 and the upper side of branches, whereas the shade-loving Lamiinids, Monohammi 

 and others that are not attracted to blossoms, crowd to fallen timber and the under 

 side of the limbs. Among Lepturas, it was an agreeable surprise this year to 



