INSECTS INJURIOUS TO THE POPLAR. 119 
teeth along each side, and its antenn of twelve joints resembling little conical cups 
placed one within the other and projecting upon their lower side like the teeth of a 
saw; appearing abroad in July. (Fitch.) 
Though of late years injurious to the apple, grape-vine, and pine, this 
beetle may originally have been > 
confined to the poplars, espe- ) 
cially as Harris does not enu- 
merate the above- mentioned 
trees, but says that it lives in the 
trunks and roots of the balm of 
Gilead, Lombardy poplar, “and 
probably in those of other kinds 
of poplar also. The beetles nay 
frequently be seen upon, or fly- 
ing around, the trunks of these 
trees in the month of July, even 
in the daytime, though the other 
kinds of Prionus generally fly Fic. 57.—Broad-necked Prionus and pupa.—a fter Riley. 
only by night.” Prof. 8. J. Smith, in his report as Entomologist to the 
State Board of Agriculture of Connecticat, for 1572, remarks: “I have 
noticed it in logs of poplar, bass-wood, and oak, and in the trunks of 
old, decaying apple trees, and Professor Verrill has collected it in great 
numbers, at New 
Haven, in chest- 
= nut railroad ties,” 
= p. 346. It seems 
to us most prob- 
able that this bor- 
== —S=—= == er also infests the 
Fic. 58.—Larva of broad-necked Prionus.—After Riley. pitch-pine, since 
we have seen these beetles flying at noon in abundance in the middle of 
July on the sandy plains of Brunswick, Maine, among pitch-pines, two 
or three miles away from any poplars; and have captured them among 
pines at intervals for twenty-five years past. 
5. THE XYLEUTES BORER. 
Xyleutes populi Walker. 
Nothing is known to us concerning this moth, except that the specific 
name indicates that it occurs on the poplar. The habitat mentioned by 
Walker, is St. Martin’s Falls, Albany River, Hudson’s Bay, the original 
specimen described by Walker being in the British Museum. 
6. THE POPLAR GOAT-MOTH. 
Cossus centerensis Lintner. 
Order Leprporrera; family BOMBYCID®. 
Perforating the trunks of Populus tremuloides, a worm similar to, but smaller than, 
the oak caterpillar (X. rebiniw), the moth issuing from the trees during June. (Bailey.) 
Usually trees less than a foot in diameter are attacked by this worm, 
