14 
pupated in a folded leaf and the other two were fully grown and about 
ready to transform, which they both did before the end of the month. 
About the end of June Mr. Ehrhorn sent us some peaches said to be 
infested with the second brood of larve. Some of the peaches had 
been bored into a little way near the stem by what was evidently, from 
the size and nature of the burrows, nearly full-grown larve of the sec- 
ond brood. One of these was found, and also one pupa. On further 
examination, however, it was discovered that the larve of what is 
undoubtedly the third brood—the second of the summer broods—were 
present in numbers, not in the fruit, but in the short stems of the fruit 
which at this season are green and somewhat succulent. In these 
stems they had made their little chambers not unlike those in the twigs 
above described or those in the crotches in the fall, except that they 
were for feeding purposes and not lined with silk, as are the latter. 
Others were also found at the base of the leaf stalks just as we had 
been finding them in our breeding cages. 
We were unable to carry our breeding-cage material farther than this 
point at Washington, and Mr. Ehrhorn was unable to furnish additional 
supplies, but he writes that he found the minute larve in the crotches 
of the trees as early as August 21. It would seem from this last and 
very important observation that some, at least, of the fourth brood of 
larvie, if not all of them, go into winter quarters and at a period much 
earlier than ould have been supposed. 
These facts go a long way toward clearing up the life history of this 
insect, and indicate a much more uniform habit in the different broods 
than has hitherto been supposed. 
The old idea that this insect is double-brooded, the first brood living 
in the twigs and the second brood affecting the ripening fruit, must be 
abandoned. At the time of the appearance of the first brood of moths 
during the month of May the fruit of the peach is of considerable size, 
especially by the end of the month, but is green, hard, and densely 
hairy, and is probably rarely if ever chosen by the parent moths asa 
nidus for her eggs. The normal location of the eggs and the point at 
which larval development begins is indicated by the foregoing notes, 
and there is no reason to doubt but that at all seasons of the year 
larvie develop in the new growth, entering normally at the axils of the 
leaves or in the stems of the green fruit. In these situations the eggs 
are placed and the young larvee construct their little oval chambers, 
which they abandon from time to time to make new ones, rarely doing 
enough damage in the later broods at any one point to be noticeable. 
As they attain larger size they travel more and often bore into fruit near 
the stem, where the greater exudation of gum and more serious character 
of the injury draw attention to them. In the case of the burrows in the 
twigs the more abundant new growth and more mature condition of 
the wood render the injury much less noticeable, nor are the results of 
the attacks so marked as in the injury to the new growth in April. 
tress 
