158 
1888. 
Forbes, S. A.—On the Present State of our Knowledge concern¬ 
ing Contagious Insect Diseases. (Address as retiring Pres¬ 
ident of the Cambridge Entomological Club, Jan. 14, 1887.) 
(Pysche v. 5, p. 3.) 
General summary of knowledge on the subject, with special ref¬ 
erence to biological problems and utilization. 
Forbes, S. A.—Contribution to American Bibliography of Insect 
Diseases. (Pysche, v. 5, pp. 15, 45.) 
Bibliographical list. 
Forbes, S. A.—Note on Chinch-bug Disease. (Psyche, v. 5, p. 110.) 
Distinguishes three diseases of JBlissns leucopterus: one due to 
a Botrytis (Sporotrichum); one to an Entomophthora; and the 
third to a microbe (Micrococcus insectorum, Burrill). Botrytis 
much more abundant and destructive in Illinois than the Ento¬ 
mophthora. Believes that these diseases will soon suppress exist¬ 
ing chinch-bug outbreak. 
Forbes, S. A.—[Chinch-bug Diseases.! (Farmers’ Review, Oct. 31, 
1888, v. 19, p. 692.) 
Reports three contagious diseases among chinch-bugs, one of 
them new, resembling muscardine of the silkworm and produced 
by a Botrytis. Uncertain as to economic usefulness of these 
diseases, but. surmises that disappearance of chinch-bugs in North¬ 
ern Illinois in 1864 was due to one of them. Vast numbers of 
chinch-bugs killed by them this fall (1888) in Southern Illinois. 
Have been reported by other observers in Minnesota, Iowa, and 
Ohio. 
Forbes, S. A.—[Epidemic Diseases of the Chinch-bug in Illinois. 1 
(Insect Life, v. 1, No. 4, Oct., 1888, p. 113.) 
Mention of the widespread and destructive character of two 
chinch-bug diseases in Illinois, one bacterial and the other due to 
an Entomophthora. Ground in some fields so thickly sprinkled with 
bugs dead with latter disease as to suggest a Hurry of snow; and 
the bacterial affection seems to be even more destructive, although 
less conspicuously so. 
Gillette, C. P.—[A New Chinch-bug Enemy.l (Prairie Farmer, 
Aug. ]1, 1888, v. 60, p. 518.) 
Fungous disease (Entomophthora) destroying millions of chinch- 
bugs on the grounds of the Iowa Agricultural Experiment Station. 
Gillette, C. P.—Chinch-bug Diseases. ( Bull. 3, Agr. Exper. 
Station, Iowa, Nov., 1888, p. 57.) 
Refers to Shimer’s and Lugger’s observations. Reports unusual 
prevalence of fungous diseases of plants and animals this year in 
Iowa, 1 including fungous diseases of the chinch-bug. Describes ap¬ 
pearance of chinch-bug disease (Entomophthora) and gives illus¬ 
trative figure, with history of its development Gives life history 
