77 
id keeps its burrow free from excrement, with which that of the 
her is always packed. When its retreat is opened, the cater- 
llar creeps readily backwards and forwards, or lets itself drop to 
e ground by a thread. 
This species, or one which has not hitherto been distinguished 
iom it, occurs also in peach twigs, as first shown by Mr. 0-lover, 
id afterwards by Profs. Riley, Comstock, and others; but some of 
e facts make it doubtful whether the peach twig borer and the 
rawberry crown-miner are really identical. I shall treat of it here 
ider both heads, however, and will give first the facts relating to 
3 injuries to the peach, following with an account of its work in 
rawberry fields. 
AS A PEACH TWIG BORER. 
The first mention of this species in the United States of which I 
ive any knowledge, was made in 1860, in a paper on the Lepid- 
itera by Dr. Erackenridge Clemens, published in the fifth volume 
the Proceedings of the Academy of Natural Sciences of Pliila- 
plphia. On page 169 of that volume, Dr. Clemens describes it as 
new species, supposing it to be distinct from the European species 
finch had been previously described by Zeller. A larva was taken 
\r Dr. Clemens, full-grown and about to transform on the limb of 
plum tree; but he discovered nothing of its habits. 
The next notice of it occurs in the report of Townend Glovei% 
ntomologist to the Department of Agriculture, for the year 1872, 
id published on the 112th page of the report of the Department 
|r that year. 
“In examining peach orchards in the neighborhood of the Mary- 
nd Agricultural College, about the first week of May, almost all 
e young twigs of the trees were observed to be killed at the extreme 
>int or end, for a distance of one to one and one-half inches, and 
e terminal bud entirely destroyed. On cutting open these dying 
pigs, the injury was found to be caused by a very minute cater- 
i liar, which, entering the twig near a bud, had entirely eaten out 
e pith and interior, leaving only its “frass” and the exuding gum 
mark the spot where it had entered. When confined in a glass 
Be, after about a couple of weeks several of the larvae left the in- 
red twigs and formed very loose cocoons on the sides of the box 
among the rubbish and old leaves lying scattered on the earth, 
id in about six to ten days, the perfect moth appeared. Speci- 
ens were forwarded to Mr. Y. T. Chambers, of Covington, Ken- 
cky, w T ho is making a special study of our micro-lepidoptera, and 
h decided it to be Anarsia (Zeller )pruinella (Clemens), probably A. 
fieatella (Zeller), of Europe, the larva of which was described 
A Mr. Clemens as taken June 16, full-grown, and about to trans- 
! rm on the limbs of a plum, but no food-plant is mentioned. The 
; il of the pupa is attached to a little button of silk, in an exceed- 
| gly light cocoon. There was scarcely a single young tree in the 
|jach orchard examined that was not more or less injured by this 
tie pest, and at least as many as twenty to fifty injured twigs 
3re found on some very young trees. After the insect leaves the 
