Hagen.} 278 [January 22, 
posts near the sluice on the milldam on Mystie Pond, near Win- 
chester, and in many other places. 
If the insect should invade the libraries of the Institutions just 
mentioned the damage and loss would surely be enormous, and it 
would seem desirable that their superintendents should know that 
such animals, living so near their treasures, may suddenly become a 
terrible pest. I may remark that Harris’ note to No. 18, that he 
finds them at Milton, in his house, is the first statement of the Termes 
entering houses here. In the Botanical Garden I saw them in ~ 
swarms, in June, 1871, on the steps leading to the Herbarium house, | 
and near the Museum I discovered an old board twenty feet from the | 
building, covered with them in all stages, so that I was able to make 
fine specimens for exhibition. 
2. Psocus venosus Burm. Hag. Syn., 40, 5. 
No. 15. Psocus gregarius Harr. Cat.; P. phaleratus Harr. mss. 
Milton, Aug. 1, 1829. 
There is in the collection one specimen in bad condition, and also 
a specimen from New Hampshire. Harris’ description is given in his 
Corresp., p. 329. He also gives as a locality Cambridge, Sept. 7, 
1837, and says they are gregarious and found on the trunks of trees, 
or on fences. ‘This custom is common with many species of the ge- 
nus, but so far as I know always with only one sex. ‘The species has 
avery wide distribution throughout the United States, from Maine. 
and northern Illinois southward even to Mexico and Cuba. 
3. Psocus purus Walsh. Proc. Acad. Philad., 1862, 361. 
No. 69. Psocus (described), Cambridge, Aug. 15, 1832, on side of 
house; on window in privy, Sept. 1; Oct. 20, 1836. Ps. luctdus Harr. 
Corr., p. 328. 
There are in the collection eight specimens belonging here; one 
labelled u, only a fragment; two males, one marked ¢ on the label; 
one nympha with ? on a label. The others have no numbers; one is 
labelled, “‘$, numerous on fences,” and two, 6 and ?, Sept. 6, 1837; 
only fraements of wings remaining. The male has the number 129 
with a ? (see below). ‘There is also a paper with eggs and the fore 
wing, labelled, ‘‘ 2 laying eggs, Sept. 6.” | 
The specimens, though in very bad condition, are sufficient to 
1 A few days ago Mr. Clark. the well-known maker of astronomical instruments 
in Cambridge, assured me that this insect lives in his workshop near the furnace, 
but has never entered his house. He has observed several years the process of rais- 
ing in the summer, and the biting off the wings by the imago. 
