1866.] 55 
Micropteryx unimaculella.—'Esirlj iu March, 18G4, Mr. Healy 
kindly sent me pupae of this species, from whicli I bred a nice series. 
It is ordinarily one of the most opaque of the group, and the bred 
specimens have a very fine appearance. Mr. Healy bred upwards of 
80 specimens, all of which were tonimaculella ; the larva? were collected 
by him at Wimbledon at the end of April and beginning of May, 1863. 
Mr. Healy says the larvae were identically the same with those described 
as Nos. 8 and 9, Ent. Ann., 1862, p. 124. 
I have no doubt whatever that se}nipurpurella,purpurella, salopiella, 
and unimaculella, are all good, true, and distinct species, and am disposed 
to believe otheVs of the group will yet be detected. The continental 
specimens I have of amentella do not seem to accord with any of our 
species. 
Micropteryx fastuosella. — I visited Manton Copse, near Marl- 
borough, the first week in June, hoping again to meet with these larvae 
in the nut leaves, but was entirely disappointed. I neither saw a single 
larva, nor even a leaf that had been mined by the larvae, yet I looked 
on the very bushes where I had met with them in 1863.* 
It is well known that a leaf mined by a Micropteryx larva will 
remain in situ for weeks and weeks after the larva has quitted it ; and 
as I could not have been too early, for the leaves were rather more 
expanded than in 1863, we have here an instance of the apparent 
disappearance of an insect. 
With reference to the habits of some of the larvae of this genus, 
I may remark, that when they quit their mines and descend to the 
earth, they sometimes penetrate beneath the surface to a considerable 
distance ; thus, in February, 1865, Mr. T. Wilkinson wrote to me aa 
follows : — 
" I am much afraid that I shall not breed any Micropteryx this 
spring, as I believe that most of the larvae which I had collected 
escaped out of the bottom of the flower-pot before I was aware of the 
fact of their going such a depth into the mould; this, no doubt, 
accounts for my non-success of last year with them." 
Cerostoma nemorella.— When at Bideford in May, 1865, 1 collected 
these larvae pretty freely by beating the honeysuckle towards dusk ; at 
that time of day they come up to the top of the plant to feed on the 
leaves. Mr. Healy had called my attention to the fact that it had been 
recorded that the larvae of this species fed on the bark of the honey- 
suckle, bvit that, according to his experience, they fed on the leaves 
* Visiting the same locality this year, June 13th, I found a few nut leaves which had been tenanted 
by these larvae, but was too late to find any larvae still in them. 
