12 BULLETIN" 293, U. S. DEPARTMENT OF AGRICULTURE. 



isted some differences of opinion as to whether oranges or lemons 

 make the bait more effective. As 75 per cent of the efficiency of the 

 bait is attributed to the use of these citrous fruits, this point is natu- 

 rally a very important one. The writer, in extensive experiments 

 with different species of grasshoppers, has yet to note any material 

 advantage or marked difference of efficiency in favor of either 

 oranges or lemons. 



The Criddle mixture, as commonly employed in grasshopper ex- 

 termination, was not experimented with during the present investi- 

 gation for lack of available material. But as nymphs of this species 

 are voracious feeders on horse droppings and dried " cow chips " 

 there seems little question but what this bait could be effectively used 

 if the ingredients were readily available. 



On account of the irregularity of the land in the infested area of 

 this outbreak the use of a hopperdozer was not practicable. 



LITERATURE CITED. 



1872. Thomas, Cyrus. Notes on the saltatorial Orthoptera of the Rocky Mountain 

 Regions. In U. S. Geol. Surv. of Montana and . . . Territories, being a 

 5th Ann. Rpt. of Progress, v. 5, p. 423-466, 2 pi. 



1876. Scudder, Samuel H. Ann. Rpt. Geog. Surv. west of the 100th meridian . . . 



being Appendix J J, of the Ann. Rpt. Chief of Engineers f. 1876, p. 278—295. 



1877. Uhler, P. R. Report upon insects collected during the explorations of 1875, includ- 



ing monographs of the families Cydnidae and Saldae, and the Hemiptera collected 

 by A. S. Packard, jr. Bui. U. S. Geol. and Geog. Surv., v. 3, p. 765-801, pi. 27-28. 

 1891. Bruner, Lawrence. Destructive locusts of North America, together with notes on 

 the occurrences in 1891. In U. S. Dept. Agr., Div. Ent., Insect Life, v. 4, nos. 1 

 and 2, p. 18-24. 



1891. Popenoe, E. A. Notes on the recent outbreak of Dissosteira longipennis. In V. S. 



Dept. Agr., Div. Ent., Insect Life, v. 4, nos. 1 and 2, p. 41—42. 



1892. Kellogg, V. L. Kansas Notes. In U. S. Dept. Agr., Div. Ent.. Insect Life, v. 5, 



no. 2, p. 114-117. 

 1892. Kellogg, V. L. Common Injurious Insects of Kansas. 126 p., 61 fig. 



Page 41—49. Injurious locusts. 

 1892. Riley, C. V. The locust or grasshopper outlook. In U. S. Dept. Agr., Div. Ent., 



Insect Life, v. 4, nos. 9 and 10, p. 321-323. 



1895. Bruner, Lawrence. Grasshopper report for 1895. T\ S. Dept. Agr., Div. Eut., Bui., 



n. s., no. 7, p. 32-35. 



1896. Bruner, Lawrence. Grasshopper report for 1S96. U. S. Dept. Agr., Div. Ent., Bui., 



n. s., no. 7, p. 36-39. 

 1898. Hunter, S. J. Alfalfa, grasshoppers, bees : their relationship. Bui. Dept. Ent. 



Univ. Kansas, no. 65, pt. 1, 64 p., 8 pi., 30 fig. 

 1898. Bruner, Lawrence. The first report of the Merchants' Locust Investigation Com- 

 mission of Buenos Aires, 98 p., 1 pi., 28 fig. 



Page 47. Tachina flies. 

 1904. Bruner, Lawrence. Grasshopper notes for 1901. U. S. Dept. Agr., Bur. Ent., Bui., 



n. s., no. 38 (revised), p. 39-61. 



Page 48. Disnosteira longipennis. 

 1893—1905. Kunckel dTTerculais, J. P. A. Invasions des Acridiens vulgo Sauterelles en 



Algerie, t. 1, pt. 2, p. 690. 

 1914. Kelly, E. O. G. A new saroophajiid parasite of grasshoppers. In V. S. Dept. Agr., 



Jour. Agr. Res., v. 2, no. 6. p. 435-446, pi. 10. 



WASHINGTON : GOVERNMENT PRINTING OFFICE: 1915 



