88 
BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
737. Forbes, S. A.—Continued. 
On some insect enemies of the soft maple. 103 
Insects injurious to the elm. 112 
Brief miscellaneous notes. 116 
Explanation of plates. 119 
Errata. 136 
Appendix. General indexes to the first twelve reports of the State 
entomologists of Illinois.. 1 
Contents. 3 
Introduction. 5 
Systematic list of genera and species. 9 
General index to insects. 1 
food plants. 69 
remedies, natural and artificial. 95 
Index to fourteenth report. 108 
738. Forbes, S. A. [Notes on the lesser apple leaf-roller and the green 
apple leaf-liopper.] <Trans. Ill. State Hortic. Soc., 1885, new 
ser., y. 19, p. 133. 
Injuries and means against. 
739. Forbes, S. A. [The plain eurculio.] <Circular [Office of State 
Entomologist], 27 April, 1886. Reprint: <Prairie Farmer. 
In view of the serious ravages of this insect in apple orchards, persons hav¬ 
ing plum and apple trees in close proximity are asked to report, that 
opportunity may he afforded to test the feasibility of protecting the apple 
orchard by planting plum trees around it to serve as lures. 
740. Forbes, S. A. Chinch bags in Illinois. <Prairie Farmer, 31 
July, 1886. 
Summary of life history, with economic recommendations. 
741. Forbes, S. A. Studies on the contagious diseases of Insects. 
<Bull. Ill. State Lab. Nat. Hist., August, 1886, v. 2, pp. 
257-321, pi. 1. 
Results of studies on bacterial diseases of Pieris rapes, Datana sp., Mamestra 
picta, Bombyx [ =Sericaria ] mori, and of an epidemic of muscardine in 
Clisiocampa sylvatica [=dis8tria.~\ 
742. Forbes, S. A. The chinch bug in Illinois. <Circular [Office of 
State Entomologist], 10 September, 1886. Reprint: <Prairie 
Farmer, 1886: 25 September; 2 October. 
In view of the severe losses in southern Illinois in 1886 from chinch-bug 
injury and drouth, the situation is discussed at length. Extent of infested 
area; relative damage to various crops; life history of the species in 
southern Illinois; food plants, natural checks; probabilities of continued 
damage; prevention and remedies, and concerted action. 
743. Forbes, S. A. Notes on the past year’s work. <Can. Ent., Sep¬ 
tember, 1886, v. 18, p. 176. <Ent. Amer., December, 1886, v. 
2, p. 173. 
Notes on the habits or ravages of Cecidomyia destructor, C. leguminicola, Me- 
romyza americana, several Elaterids, Diabrotica longicornis, Systena blanda, 
Epiccerus imbricatus, Sphenophorusparvulus, Aphis maidis, Nematus ventricosus 
[==ribesii], and Crambus zeellus. 
