368 BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 



2416. EILEY, C. V. The buffalo-gnat problem in the lower Mississippi 



Valley. Abstract: <Proc. Amer. Assoc. Adv. Sci. for 1887, 

 [May], 1888, v. 36, p. 362. 

 Result' of late investigations on species of Simulium. 



2417. EILEY,' C. V. Systematic relations of Platypsyllus, as determined 



by the larva. <Sci. Amer. Suppl., 2 June, 1888, v. 25, pp. 10350- 

 10358, 4 figs. 



Review of the literature concerning the systematic position of Platypsyllua 

 castoris; additional facts confirming G. H. Horn's view of the coleopterous 

 nature of the insect. 



2418. EILEY, C. V. Eeport of the entomologist. <Ann. Kept. [U. S.] 



Commissioner Agric. for 1887, 1888, pp. 48-179, 8 pi. Separate: 

 < Washington: June, 1888, pp. 48-179+6, 8 pi. 



TABLE OF CONTENTS. 



INTRODUCTION 48 



Damage by the chinch-bug, 48 Codling-moth, 48 Hop Aphis, 

 48 Work of Division in regard to silk-culture in the past year, 

 49 Recent experiments on the fluted or cottony cushion-scale 

 of California, 49 Hydrocyanic acid gas and arseniuretted hydro- 

 gen, 49 Possible introduction into California of the parasites of 

 Icerya from Australia, 50 Recent experiments on other scale- 

 insects, 50 Professor Osborn's report on the more important in- 

 sects of the season in Iowa, on the chinch-bug, on hop insects in 

 Wisconsin, 50 Mr. Bruner's report, 50 Mr. Webster's report on 

 the southern buffalo-gnat, 50 The year as a whole one of com- 

 parative immunity, 50 Apiculture, 50. 



THE CHINCH-BUG, Blissus leucopterus. By L. O. Howard 51 



Introductory, 51 Past history, 51 Earliest appearance, 52 First 

 described by Say, 52 Called "Mormon louse" in Illinois in 1840, 

 52 First recorded appearance in Missouri, Iowa, Indiana, and 

 Wisconsin, 52 Its damage in the years 1864 and 1868, 52 Esti- 

 mates of loss in 1871, 52 Great injury in 1874 in Missouri and ad- 

 joining States, 52 First injurious appearance in New York in 

 1882, 53 Damage in succeeding years, 53 Geographical distri- 

 bution, 53 Indigenous east of the Rocky Mountains, north and 

 south, 53 States in which it does the greatest damage, 53 In 

 Cuba, 54 West of the Rocky Mountains, 54 Specimens from 

 California and Mexico, 55 Injury during 1887, 55 Review of 

 localities and damage this season by the statistician of the De- 

 partment, 55 Table showing losses in States most damaged, 56 

 Summary of counties in these States, 57 Food-plants, 57 Cul- 

 tivated grains and cultivated and wild grasses, 57 Rice, 58 Poly- 

 gonum, 58 Stages of growth Descriptive, 59 Egg, 59 Larval 

 stages, 59 Pupa, 59 Imago, 59 Original description, 59 Le 

 Baron's description, 59 Fitch's varieties, 60 Riley's variety 

 melanosus, 60 A new variety, 60 Number of broods and hiber- 

 nation, 60 First accurate statement, 60 Hibernation, 60 Influ- 

 ence of severe cold, 61 Odor reveals hiding places, 62 Habits, 

 62 Flight, 62 Oviposition, 62 Young larvae, 63 Growth, 63 

 Migration, 63 Habits on corn, 64 Preparations for hibernation, 

 64 Erroneous statement as to oviposition, 65 Exceptional 

 habits, 65 Natural enemies and diseases, 65 Insect enemies, 65 

 No true internal insect parasite yet known, 65 A possible hair- 



