18 
The Four-striped Plant-hug.—Punctured and killed leaves of currant 
and branches and leaves of parsnip. Imago described in full. Can b 
shaken into lye, soap-suds, or water before becoming active in the morning 
Insects Injurious to the Potato. (1st Ann. Pep. State Ent. Ill. [second of th 
series], pp. 63-78.) 
The Colorado Potato Beetle known in Illinois only six years. List c 
nineteen natural enemies given. Hone except the Tachina fly attack i 
exclusively. The skunk also eats it. Mentions hand picking, sun burning 
starvation, and Paris green as remedies. Food plants mentioned. Tb 
beetle is traveling eastward at the rate of fifty or sixty miles a yea, 
Paris green should be used with caution, especially where children ai 
likely to resort. The poison not communicated to potatoes. Effectiv 
against all foliage-eating insects, but not for those that feed by suctioi 
Rules for using it. Arsenic suggested as substitute. 
Insects Injurious to the Bose. (1st Ann. Rep. State Ent. Ill. [second of tb 
seriesj, pp. 79-82.) 
The Rose Slug.—Feeds at night on the upper surface of the leaf, res’ 
ing during the day on the under side. Whale-oil soap is an effectu: 
remedy. Two broods appear; the first early in June, the second in Angus' 
Insects Injurious to the Pine. (1st Ann. Rep. State Ent. Ill. [second of th 
series], pp. 83-96.) 
The White Pine Leaf-louse.—Description of the scale and its manner c 
formation. The mature insect is found under the scale. Hature of th 
scale explained. The male scale is much smaller and lacks the media 
portion. Male described in full. Two broods in a year with periods c 
hatching not sharply defined. Winter is passed in the egg state. By th 
end of the first week in August about half of the eggs of the second broo 
had hatched only males: later, females began to appear and seek the moi 
tender leaves before becoming fixed. Experiments with dilute fish brim 
soap-suds, and unleached ashes yielded similarly unsatisfactory result: 
Applications must be made at two different seasons of the year in ordt 
to reach both broods, and the second brood will require attention once 
week through August, Pine leaves will bear stronger applications tha 
those of fruit trees. Chilocorus bivulnerus the most effective enemy. Ha 
also a chalcid parasite. Mentions curious instincts of several species ( 
insects. 
Destruction of the Walsli Cabinet.—Effect of the Timber Fires. (Prairie Farme 
-1871, v. 12, p.-.) 
Entomologv suffered heavy loss in the Chicago tire by the destructio 
of many amateur collections, the large collection belonging to the Chicag 
Academv of Science, and, above all, the Walsh cabinet of insects, pu 
chased by the State. About a tenth of this cabinet, mostly duplicat 
Coleoptera and Lepidoptera, are all that remain. 
The great timber fires of Wisconsin and Michigan must have destroye; 
incalculable numbers of insects, both beneficial and noxious. 
Answers to Correspondents: The Lesser Apple Leaf Folder.—The .Death-Wat < 
and other Insects. (Prairie Farmer,-1871, v. 42, p.-.) 
Refers to his articles on this leaf folder (Tortrix malivorana) in the “Ameij 
can Haturalist,” for June, 1871, and in his first annual report. Obsery; 
tions the present year give reason to believe that it will not prove as ii 
jurious as was at first apprehended. The first brood did some damage i 
a restricted locality, but the second proved abortive. Mentions T. ros 
ceana as common and wide-spread, but never known to have done serioi 
damage. 
Death Vv atch.—Cites brief account in the “Prairie Farmer” of Apr. 8, ( 
two genera (Psocus and Anobium) to which this name has been applie( 
A correspondent thinks he has traced this ticking sound to Chelifer cai 
oroides , but his account will require further observation for its confirmatioi 
From his own observations author thinks there are two species of Psoci 
