124 ‘THE CANADIAN ENTOMOLOGIST. 
what it would have produced. On the next page (166, v. 3), I mentioned 
a larva precisely like it, but in a different blotch mine, inhabiting the 
leaves of Willow Oaks, and another in leaves of the Black Oak, still 
another in the leaves of the Beech, another in the Sugar Maple, and yet 
another in the leaves of a species of Desmodium. Viewed through the 
integument, all of these larvee, except the Desmodium miner, resembled 
the supposed larva of Z. fubiferella. ‘The miners of the Beech and Sugar 
Maple leaves appeared to be identical with each other and with the | 
supposed Z. /ubiferella, but their mines differed from it, and resembled | 
those in the leaves of the Black and Willow Oak in being more irregular 
blotches. ‘The miners of the Black and Willow Oaks differed from the 
others by being of a bluish or smoky colour instead of yellowish-white. 
The miner of the Desmodium differed from the others in shape resembling 
the larva’ of Leucanthiza, as described by Dr. Clemens. But the mine 
and cocoon (or rather zzd@us), are indistinguishable from those of Zz¢/o- 
colletis guttifinitella Clem. and allied species of Lithocolletis. These larva 
are all Coleopterous ! They remained in the mines. without food from 
September to the latter part of April. All died except the miners of the 
Beech (Fagus ferruginea) and of the Desmodium. In the latter part of 
April these became pupæ, remaining in that condition for ten days, when 
the imagines emerged. The miner of the Beech proved to be Srachys 
aeruginosa, Say, as identified by Dr. Horn, as I am informed by Mr. Wm. 
Saunders. 
The miner of the Desmodium proved to be JZetonius laevigatus, day, 
as identified by Mr. Johnson Pettit, of Grimsby, Ont. The larva-of the 
Brachys resembles that of CArysobothris femorata, as figured in Packard's 
Guide, p. 457, more nearly than that of Trachys yemea, figured on p. 458. 
The head is rounded in front ; the first segment is much the largest, and 
the larva tapers rapidly thence to the fourth segment, and thence 
more gradually to the apex. The larva of Afctonius laevigatus is flat- 
tened, and is rather widest about the middle, tapering, however, more 
rapidly to the tail than towards the head; the first segment is largest, 
and the head rounded in front. It resembles the larva of Zrachys - 
in outline more than that of Chrysobothris. In examining dead speci- 
mens of all these larvee removed from the mines this spring, I was not 
able to detect any trace of feet. : 
I have no excuse to plead for this error other than the facts above 
stated, and ignorance of Coleopterous larvæ, 
