THE CANADIAN ENTOMOLOGIST. 



the leaf is more folded. Biit I have not been able to detect any difference 

 between the Imagines. 



Dr. Clemens also records it as mining the leaves of Amphicarpaa 

 monoica, or Hog pea-nut ; but my botanical friends tell me that A. monoica 

 is not found in this locality, and I have not met with it. 



LOCUST LEAF MINERS. 



What is Anacampsis robiniella Fitch, j/// Rep., Sec. 334. 1 



Dr. Fitch says that the mine is white blister-like, and on the underside 

 of the leaves of the locust. I quite concur with Dr. Clemens that this is 

 the mine of L. robiniella, supra, and that there is no other similar mine 

 upon the under side of these leaves. But there is both upon the upper 

 and under side of the leaves a flat, pale yellowish mine containing the 

 larva described by Dr. Fitch as that of his Anacampsis robiniella. This 

 larva is the same which I had before me as stated, Ante p. 54, and which, 

 like Dr. Clemens, 1 supposed to be a Lithocolletis larva of the second (Hat) 

 group. In fact it is identical with the larvae of that group in structure 

 and appearance, except that the sides of the segments are perhaps a 

 little more mammilated ; and thus Dr. Clemens was in error in supposing 

 that the flat larvae were confined to the upper surface, for this mines both 

 surfaces indifferently. It is pale green, with a line of dark green contents. 

 The mine always remains flat, and the larva usually leaves it, and enters 

 the pupa state on the ground in a cocoon, described by Dr. Fitch as being 

 "a small, broad, oval cocoon. o-i8th in. long, and o-i2th in. thick,*' 

 woven, however, of pale yellow instead of white silk, as stated by Dr. 

 Pitch ; sometimes, however, it pupates in the mine. The larva is of 

 about the same length as the cocoon. Vet Dr. Fitch describes the 

 Imago as having an expanse of 0-45 in. ! Since the remarks at p. 54 ante 

 were written, I have bred the imago from these cocoons, and instead of 

 Anacampsis robiniella. I obtained an undescribed Lencanthiza, to be 

 hereafter described as /. omatella. and which for the richness and 

 brilliancy of its tints is not surpassed by any insect known to me. It 

 could not by any possibility be mistaken for Anacampsis robiniella. I )r. 

 Packard {Guide p. 349), describes Depressaria robiniella, which can not 

 possibly be the Anacampsis, and I propose hereafter to describe as 

 Depressaria pseudacaciella, still another species, the young larva of which 

 lives as a guest, or rather as an intruder, in the mines of L. robiniella, 

 Leucanthiza omatella. and Parectopa robiniella. (I have seen it cut its 



