200 INSECTS INJURIOUS TO FOREST AND SHADE TREES. 
spun their cocoons and the saw-flies came out the next spring. So well 
did the crossbills do their work that the Lophyrus was rare the next 
summer (1869), Tf this wholesale destruction of the larve had not 
occurred, there would have been acres of young pines destroyed. 
“*T did not meet with the red crossbill until January, when I meta flock 
at Sandwich; in February I met a flock here (Eastham). Neither of 
these birds are common visitors to the Cape. I have not known of any 
visiting us the past winter. I never met with one until 1868, but resi- 
dents of Eastham informed me that the white-winged species was with 
them in the fall of 1867. An old lady in East Falmouth informed me 
that a number of years ago they visited her orchard and damaged her 
apples by cutting them off to get the seeds.” 
70. THE LYDA SAW-FLY. 
Infesting the Austrian pine, tying the needles together with a silken web filled with 
castings, forming a mass about six inches in diameter, with the needles of the pine 
scattered through the mass, the leaves being separated by the false-caterpillars from 
the branch. 
We have noticed this false-caterpillar on but a single occasion, and 
then failed to rear the worms to the winged state. The following ac- 
count is taken from our article entitled ‘“ Injurious Insects, New and 
Little Known,” in the Report of the Massachusetts Board of Agricul- 
ture for 1870: 
Late in September of 1869 Dr. William Mack, of Salem, Mass., brought 
into the museum of the Peabody Academy of Science, some ‘singe 
talse-caterpillars which had assembled on a 
single branch of an Austrian pine, on his place, 
and had tied the needles together with a fine 
silken web filled with castings, forming a mass 
of castings about six inches in diameter, with 
the needles of the pine among them, the leaves 
being separated by the larvee from the branch. 
The larva is that of a species of Lyda, and 
while doing little injury to the tree, so far as 
known, yet merits a short description. Dr. 
Ratzburg figures a similar species in his work 
on forest insects, and states that the Lyda 
campestris of Kurope, to which our species 
Fic. 84,—Lyda saw fly larva on Seems Closely allied, is sporadic in its attacks 
Austrian pine, enlarged.--From 
Packard. § on the pine and never proves very destructive. 
The larva.—The body is cylindrical, a little flattened, and thickest in, the middle, 
with small thoracic slender legs, which are not used much in walking, the larva 
wriggling along when placed on a smooth surface. The head is pale reddish with a 
black spot between the antenn ; the prothorax is black above and the body reddish 
olive-green, with a rather broad purplish line along the middle of the back. There 
are no abdominal lees, and the end of the body is somewhat flattened, with a black 
round -spot on each side of the’anal piate; beneath is a broad transverse incision. 
