194.‘ INSECTS INJURIOUS TO FOREST AND SHADE TREES. 
American Association for the Advancement of Science, at Saratoga. 
He had found it in such numbers upon the island of Nantucket, in the 
young trees of Pinus rigida planted there some years ago to repair the 
damage done by burning during the war of 1812, as to seriously threaten 
the success of the experiment. Mr. Scudder intends publishing an ae- 
count of the workings of the insect in that locality very shortly. — 
‘‘In the latter part of July specimens of the twigs of Pinus rigida were 
received from Mr. S. H. Gage, of Ithaca, which had evidently been 
infested by the same insect, although no living inhabitants were to be 
found. In September other specimens were received from the same 
gentleman, and this time pup and one larva were found. According 
to Mr. Gage the insect is not v ery common in that locality. 
“In the latter part of August individuals of the second brood were 
very abundant in the serub-pine in the vicinity of Washington. As 
before, they were found in almost every stage of growth, and.the dif- 
ference was even more marked. In one instance five larvee of greatly 
differing sizes were found in one shoot. The smaller ones were boring 
into the bases of the leaves, and the larger ones into the twig proper. 
The largest of the five had made quite a long channel from the tip of 
the bud down into the heart of the twig. Pup were also found at this 
time, which did not give forth the moth until late in the winter. ; 
“The usual mode of hibernation is in the pupa state. A thorough 
search in January in the field showed only pups. The pupe collected 
in August and September did not begin to give forth the moths in the 
breeding cages before early January, February, and March, and were 
greatly hastened without doubt by the heat of the room. On February 
15, however, a few twigs were collected, from one of which, on Febru- 
ary 28, a full-grown larva had emerged and was found crawling about 
the cage. This would seem to indicate occasional larval hibernation. 
‘As to remedies, the only one which I can suggest at present is that 
involving the somewhat arduous task of picking off the infested twigs 
in early winter and burning them. Whether the salvation of the trees 
will be worth this labor in greatly infested regions will depend entirely 
upon their value to those interested. 
“As Mr. Scudder has prepared deseriptions of all stages, V we will not 
trespass upon his ground by appending further descriptions than we 
have already given. Our figure will assist in the recognition of the 
species.” 
65. ‘THE PITCH-PINE RETINIA, 
Retinia rigidana Fernald. 
Order LEPIDOPTERA ; family TORTRICID 2. 
Inhabiting terminal shoots of Pinus rigida, and of similar habits to the Frustrating 
Retinia, a gray, brown, or blackish larva 8"™ (4 inch) in length, which in its perfect 
form becomes a small moth with dingy white wings, marked with dark red and sil- 
very gray. (Comstock. ) 
“In the summer and fall of 1879 Mr. 8S. H. Gage, of Ithaca, N. Y., sent 
to the department specimens of the pitch-pine conan Tortricid 
