492 Annals of the Carnegie Museum. 



hi. Sitalces infuscatus Brunei-. 



Sitalccs infuscatus Bruner, MS., Biol. Cent.-Amer., Orthopt., II, p. 291 (1908); 

 Ib., Ann. Carnegie Mus., VIII, p. 123 (1911). 



Habitat. — A pair, male and female, were taken by J. D. Haseman. 

 The male was collected at Madeira Falls, Rio Madeira, Brazil, October 

 17; and the female at Villa Bella, Bolivia, October 12. 



Genus Schistocerca Stal. 



Schistocerca Stal, Recens. Orthopt., I, p. 64 (1873); Scudder, Proc. Amer. Acad. 

 Arts and Sci., XXXIV, p. 441 (1899). 



The locusts, which comprise the present genus, are, with a single 

 exception, confined to the American hemisphere, where the species 

 are widely scattered from the northern boundary of the United States 

 to at least as far south in Argentina and Chile as the forty-third 

 degree of latitude. These insects are, however, most abundant in 

 the tropical and subtropical countries, where several of the species at 

 times become much dreaded pests. Kirby in his Synonymic Catalogue 

 of Orthoptera (Vol. Ill, pp. 454-462) lists seventy-three species. 

 Since that work was published two or three additional forms have 

 been recognized. One of these latter is described in the present 

 paper and a second is admitted as possibly new. 



112. Schistocerca colombina (Thunberg)? 



Gryllus colombinns Thunberg, Mem. Soc. Petersb., IX, pp. 399, 425, No. 92 (1824). 



Acridium {Schistocerca) colombinum Stal, Recens. Orthopt., I, p. 67, No. 17 (1873). 



Schistocerca colombina Scudder, Proc. Amer. Acad. Arts & Sci., XXXIV, pp. 443, 



449 (1899); Brunner & Redtenbacher, Proc. Zool. Soc. Lond., 1892, p. 210. 



For additional synonymy see Kirby, Syn. Cat. Orthopt., Ill, p. 455. 



Habitat. — A single female specimen bearing the label "Bogota, 

 Colombia," is referred here with considerable doubt. It belongs with 

 accession number 2306. 



There are also at hand a number of other specimens belonging to a 

 former collection of the Carnegie Museum which has been in my 

 possession for several years. These latter answer to Thunberg's 

 description even better than does the individual just referred to above. 

 They were collected at " Bonda (250 ft.) Dept. Magdalena, Colombia, 

 S. A.," where they were taken by H. H. Smith. In their measurement 

 the females exceed that given by Thunberg for his Gryllus colombinns 

 (" Magnitudine fere grylli migratorii"). Some time ago I set these 



