14 PSYCHE [February 
The stem is also eaten out above the highest visible indications of an entrance 
and in many cases the branches are also mined for some distance. Examinations 
made August 26th and September Sth showed that the stems are hollow and that the 
larvae feed on the whitish inner layer which resembles pith; at intervals pits, or 
enlargements of the gallery, are excavated to the tough outer fibres, while in many 
instances the inside is eaten entirely away. ‘There are holes eaten through to the 
outside at some of these places. In some of the larger stems there will be scarcely a 
trace of a larva for several inches, and then for some distance it will be tightly 
packed with sawdust. Many times a larva will be found in this sawdust and another 
larger larva at the base of the stalk below another plug of debris. In one of the large 
stems five larvae were found and in most cases there were at least two larvae. Many 
of the larger larvae have the abdominal segments stained a delicate orange-pink on 
the dorsum. The larvae at this time were about 9 mm. long and spun a thread 
when crawling. 
On November 5th the larvae were found, sometimes one, again two, at the base 
of the stalk just above where the new buds have already started. ‘They were envel- 
oped in a flimsy cocoon of silk and sawdust with the larva head up. The stalks were 
dug up, cutting of the stem just below the buds under the ground, and kept in tin 
cans all winter. Some of the cans were closed and some left open and, although they 
moulded very badly, quite a number of imagoes emerged between May 17th and 
some time during the first week of June. In most of these cases the imagoes emerged 
from the stem where cut off at the top; but in nature they emerge at the side of the 
stalk a few inches above the ground and the exuviae is left sticking out of the hole 
about two thirds of its length. 
A search for material on June 1, 1907, resulted in finding a few pupae and 
larvae in shaded places while the majority of the stems showed that the imagoes had 
emerged some time previous. Several of the infested stalks were sent to Prof. C. H. 
Fernald at Amherst, Mass., at his request, and the moths that appeared from them 
were pronounced to be the species, under discussion. Bred specimens of this moth 
were first identified for me by Mr. W. D. Kearfott of Montclair, N. J., to whom I 
am indebted for the determination of nearly all of my Micro Lepidoptera. 
FuLt Grown LARVA. 
Length at rest 8 mm., in motion 9 mm. ‘These measurements were taken 
from larva described, but others were found measuring one or two millimeters more 
than this. 
General color creamy white, tinged to varying degree with red, especially on 
