GRASSHOPPERS — GURNEY AND BROOKS 91 



Rehn, J. W. H. 



1939. Records of Orthoptera from Nova Scotia, Newfoundland and the 

 French Islands Saint-Pierre and Miquelon. Fragmenta Faun. 

 Mus. Zool. Polonici, vol. 4, no. 16, pp. 259-265. 

 Richardson, John 



1852. Arctic searching expedition. 516 pp. (Another edition appeared in 

 1851.) 

 RiLET, Charles Valentine 



1875. The Rocky Mountain locust — Caloptenus spretiis Thomas. 7th Ann. 



Rep. Nox. Benef. Ins. Missouri, pp. 121-196, figs. 23-39, 1 map. 



1876. The Rocky Mountain locust — Caloptenus spretus Thomas. 8th 



Ann. Rep. Nox. Benef. Ins. Missouri, pp. 57-156, figs. 39-47. 

 1877a. The Rocky Mountain locust — Caloptenus spretus, Thomas. 9th 



Ann. Rep. Nox. Benef. Ins. Missouri, pp. 57-124, 1 map, figs. 17-29. 

 1877b. The locust plague in the United States. 236 pp., 42 figs., 3 col. pis. 

 1891. Destructive locusts. U. S. Dep. Agr. Div. Ent. Bull. 25, 62 pp., 



12 pis., 1 map. 

 Riley, C. V.; Packard, A. S., Jr.; and Thomas, Cyrus 



1878. First annual report of the United States Entomological Commission. 



Pp. 1-477, 111 figs., 3 maps, 27 appendices (pp. 1-294, 5 pis.). 



U. S. Dep. Interior, Washington, D. C, 

 1880. Second report of the United States Entomological Commission. 



Pp. 1-322, 10 figs., 16 pis., 6 maps, 8 appendices (pp. 1-80, 1 pi.). 



U. S. Dep. Interior, Washington, D. C. 

 1883. Third report of the United States Entomological Commission. 



Pt. 1, pp. 1-85, 2 maps. 

 Roberts, H. Radclyffe 



1941, A comparative study of the subfamilies of the Acrididae (Orthoptera) 



primarily on the basis of their phallic structures. Proc. Acad. 



Nat. Sci. Philadelphia, vol. 93, pp. 201-246, 90 figs. 

 Roe, Frank G. 



1951. The North American buffalo, a critical study of the species in its wild 



state. 957 pp. 

 Saussure, H. de 



1861, Orthoptera Nova Americana (Diagnoses praeliminares) (Ser. II). 



Rev. Mag. Zool., pp. 126-130, 156-164, 313-324, 397-402. 

 1870, Famille des Blattides, pp. 1-123, 2 pis., In Mission Scientifique au 



Mexique et dans I'Amerique Centrale , . , Zool., Pt. 6. 

 ScHARFF, Donald K. 



1954. The role of food plants and weather in the ecology of Melanoplus 



mexicanus mexicanus (Sauss.). Journ. Econ. Ent., vol. 47, pp. 



485-489. 

 Schlebecker, John T, 



1953. Grasshoppers in American agricultural history. Agricultural History, 



vol. 27, pp. 85-93. 

 Scudder, S. H. 



1876, Report on the Orthoptera collected by the United States Geographical 



Surveys west of the 100th meridian, under the direction of Lieu- 

 tenant George M. Wheeler, during the season of 1875. Ann. Rep. 



Chief of Engineers for 1876, appendix jj, pp. 278-295. (Also 



issued as a separate with pp. 498-515.) 



