16 
they may not injure it and cause rot by breaking the skin in feeding. 
Horticulturists have for the first time gone into a general fight against 
them, capturing them under chips or cobs and jarring them from the 
trees. Reports on the comparative efficacy of the two methods differ. 
Those jarred from the tree to the ground may be taken under chips or 
cobs at any time after two hours. 
Visit to McLean and Tazewell Counties—The Chinch Bui. (Prairie Farmer, 
Aug. 5, 1871, v. 42, p. -.) 
[See 16th Rep. State Ent. Ill., Appendix, p. 36.] 
The Chinch Bug. (Prairie Farmer, Aug. 12, 1871, v. 42, p. -.) 
[See 16th Rep. State Ent. Ill., Appendix, p. 37.] 
The Chinch Bug and other Insects. (Prairie Farmer. Aug. 26, 1871, v. 42, 
p. -.) 
For points concerning chinch bug see 16th Rep. State Ent, Ill.. Ap¬ 
pendix, p. 37. 
Arbor Vitae Twig Primers. — Received Hylurgus dentatus from Water¬ 
loo, Iowa, where the insect had seriously damaged an arbor vitas 
tree. Says that he finds no record of this habit, though it has long been 
known to feed upon the red cedar. Quotes Harris on its general habits, 
and advises clipping off twigs and burning while insects are in the grub 
state. Mentions another species, H. terebrans , as very destructive to the 
pitch pine. 
The Burying Beetle, Necrophorus americanus. —Indicates the origin of the 
common name by mention of habit of the beetle, and describes its mode 
of burying objects. May avail itself of the burrow of ground squirrels or 
other small animal. 
The White-lined Sphinx—Deilephila.—Larva eats purslane, buckwheat, 
and several other plants. 
Aphis mali —Very susceptible to changes of weather, not often remain¬ 
ing long enough to do serious damage. 
Introduction. (First Ann. Rep. State Ent. 111. [second of the series], pp. 
5—11.) 
Letter to the Governor discussing the entomological situation, the 
business of the scientific entomologist, the importance of having in the 
State at least one large cabinet collection of noxious insects, and, among 
other generalities, mentioning purchase of the Walsh collection and as 
next in importance to collections, correctly-drawn figures of insects, noting 
especially in this connection the illustrations in the Missouri Reports and 
the plates in preparation by Mr. Townend Glover. Entomologist of the U. 
S. Department of Agriculture. 
Mentions the Colorado potato beetle, currant saw-fly, asparagus beetle, 
the pea weevil, the pear caterpillar, and the lesser apple leaf-folder as 
unknown in Illinois as noxious insects until within the last few years. 
The apple bark louse, on the other hand, seems to be in process of ex¬ 
tinction, and the chinch bug has been wholly unknown in Northern Illi¬ 
nois for many years until the current year [1870], when it has again ap¬ 
peared in considerable numbers in a few localities, hibernating in Kane 
county, for example, under sheaths of corn stalks, in numbers apparently 
sufficient to start colonies the succeeding year. 
Insects Injurious lo the Apple-tree. (First Ann. Rep. State Ent. Ill. [second 
of the series], pp. 13-17.) 
The White-marked Tussock Moth (pp. 13-17.)—Larva described and re¬ 
ported as feeding on the foliage of various trees and gnawing young ap¬ 
ples. In one locality apple-trees loaded with fruit were stripped of leaves 
this year by the second brood. Larvae do not spread rapidty over the 
country, as the female is wingless, and places her eggs on her own cocoon. 
These cocoons, although scattered because of the solitary habit of the 
larva, form conspicuous objects in winter, and may then be easily picked 
off and burned. Food plants enumerated. Has several parasites. The most 
destructive, Tachina orgy ice. n. sp., is described as follows: 
