69 
the larve may be a species of Depressaria, and I now have larvee which 
I think are the second brood of the same species. This species was 
parasitized by Wicrodus gibbosus Say. 
Tmetocera ocellana has not been observed, though it has sometimes 
been injurious in Delaware. 
Steganoptycha sp.—During the latter part of last summer the ter- 
minals of young apple trees were very generally injured by a small, 
reddish larva boring into them. These larve became full grown late 
in October and then hibernated in their burrows in the terminals, 
usually at the base of a leaf petiole which remained attached over 
winter. _ In some cases the burrows were slightly lined with silk. The 
hibernating larvee became somewhat flattened and reduced in size and 
of a lighter color. Were a twig broken open the larvee would close 
the opening with silk and chips, and one or two spun whole cases of 
silk upon the outside of the twig when thus molested. I also found a 
similar case on a branch of one tree. Fully 50 per cent of the larvee 
in the orchard under observation were parasitized by Lracon mel- 
litor Say, whose larva makes a white, parchment-like cocoon of silk 
within the burrow. All terminals containing parasitized larvee were 
found to be punctured by a small hole just below the cocoon of the 
parasite. Whether this was caused by the oviposition of the parasite 
or is for its exit I do not know. These larve pupated May 5 to 7 and 
the moths emerged May 16 to 28. They have been determined by 
Mr. Busck to be the same as Steganoptycha salicicolana Clem. of the 
U.S. National Museum collection, but he states that these specimens 
are probably wrongly determined. ‘The species is doubtless the same 
as that found by Miss Murtfeldt in Missouri, which she describes as S. 
pyricolana Riley MSS., stating that Dr. Fernald considered it identi- 
eal with S. salicicolana Clem. As the larve of the latter species, 
however, have been recorded as breeding in willow galls, it seems 
hardly probable that they are the same, and Dr. Riley, who Miss 
Murtfeldt states had types of Clemens’ species, pronounced them dis- 
tinct. The moths are very pretty little insects of a gray-brown color, 
with bluish reflections, and marked with bands of silvery, lead gray, 
and black scales. This species is very common throughout the State 
and has done considerable injury in some instances. S. salicicolana 
Clem. was originally from Dr. Walsh in Illinois, and I find no other 
mention of it except by Miss Murtfeldt. 
The destructive green pea louse.—A considerable portion of the last 
two months has been devoted to a field study of the pea louse, Vectaro- 
phora destructor Johns. 
Last year I found the lice still breeding on peas at the station on 
December 1. The first to be observed this year were seen on May 1, 
when, after considerable search, I found a few full-grown wingless 
females on early peas at Milford. On May 11 the lice were found to 
