BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 213 



1583. KILEY, C. V. Continued. 



2. Rose-chafer ; answer to letter of I. M. H. ; means against Macrodactylua 



subspinosus. 



3. Bark-louse ; answer to letter of J. L. K. ; seasons and ravages of and means 



against Mytilaspis pomicorlicis [=pomorum~\. 



4. Flea-beetle ; answer to letter of J. E. R. ; habits, ravages, and means 



against Graptodera [=Haltica] chalybea. 



1584. RLLEY, C. V. The Hellgrammite. <Sci. Amer., 23 June, 1873 



[v. 50], n. s., v. 36, pp. 392-393, 3 figs. 



Structure and habits of Corydalus cornutus, description and figures of egg- 

 uiasses, eggs, larvae, pupa, and images ; adaptations of sexual structure to 

 conditions ; figure and description of eggs of Belostoma grande [= ameri- 

 canum~\. 



1585. RILEY, C. V. The 'hopper in Iowa. Report by Professor Riley, 



Chief of the TJ. S. Entomological Commission. <Chicago 

 Daily Tribune, 4 July, 1877, v. 32, p. 3. S.-b. No. 14, pp. 112- 

 114. Extract: <N. Y. Tribune, 4 July, 1877. S.-b. No. 14, p. 

 128. 



Report to the governor of Iowa as to the observed and anticipated ravages of 

 Caloptenus spretus in southwestern Iowa in 1877 ; the young locusts mostly 

 destroyed by the weather ; their natural enemiejs and the efforts of man ; 

 localities infested; recommends diversification of crops; summary of means 

 against the young locusts; claims for the first recommendation of proper 

 ditching; description of apparatus for catching and killing locusts. 



1586. RILEY, C. V. Strawberry worm and remedy. <N. Y. Tribune, 



18 July, 1877. S.-b. No. 14, p. 231. 



Description of egg, larva, and imago, habits of and means against Emphytus 

 [= Harpiphorus'] mcrculalus. 



1587. RILEY, C. V. Fighting the Hessian-fly. <N. Y. Tribune, 18 



July, 1877. S.-b. No. 14, pp. 232-233. Reprint : <Colman's 

 Rural World, 5 December, 1877. S.-b. No. 14, pp. 268-269. 



Habits, seasons, parasites, introduction, spread, and ravages of and means 

 against Ceddomyia destructor; description of eggs and larva. 



1588. RILEY, C. V. The grasshopper. Considered practically and sci- 



entifically with a retrospective and prospective glance at his 

 history. <Daily Rocky Mountain News [Denver, Colo.], 1 

 August, 1877, v. 18, p. 4. S.-b. No. 14, pp. 81-84; 110-112. Re- 

 print : <Colorado Farmer, 2 August, 1877, v. 9, No. 31, p. 4. 

 <Chicago [111.] Daily Tribune, 7 August, 1877, v. 32. p. 7. S.-b. 

 No. 14, pp. 84-86. 



Observations on the past and present conditions of Caloptenus spretus in 1877 

 in the regions invaded by it ; work of its enemies and parasites ; complica- 

 tion of the locust problem in Colorado owing to the climate of the State ; 

 prospects of future injury; means against the locusts in Colorado; work 

 of the U. S. Entomological Commission. 



1589. RILEY. C. V. In reference to wheat- worms. <Prairie Farmer, 



11 August, 1877. S.-b. No. 14, p. 127 ; No. 20, p. 86. 

 Critical review of C. Thomas' "A wheat insect" (Prairie Farmer, 21 July, 

 1877), with correction of some obscurities in regard to Meromyza americana 

 and Gortyna nitela. 



