46 



NORTH AMERICAN ACRIDIID^. 



male, 10-12, female, 13.5-14.5; antenna: male, 7-8.5; female, 

 8.5-10 ; tegmina : male, 2.5 X 4, 3 X 4.5 ; female, 3.5 X 6 mm." 

 (See Fig. 4 drawing of male cercus.) 



South Carolina : Denmark, Aug. 15 ; Spartanburg, Aug. 16. 

 Georgia: Blue Ridge, July 25. 



Austral zones. Sylvan in habitat, occurring in the undergrowth 

 in pine woods. 



FIGS. 2-10, Cerci of Melanoplus, male : 2, M. sylvestris; 3, M. celatus; 4, M. carnegiei; 

 5, M. diver gens ; 6, M, similis ; 7, M. tributes; 8, M. devius ; 9, M. deceptus; 10, M. sym- 

 metricus. (Magnified 16 diameters). 



Melanoplos celatus Morse. 



Melanoplus celatus. Psyche, XI, 10 (1904). 



1 ' Closely related to M. islandicus, agreeing with it in size, 

 coloration, markings and form with the following exceptions : 



1 ' Cerci of male similar to those of islandicus, stout at base, 

 tapering equally, or more rapidly in basal portion, to a slender, 

 flattened tip, once and a half or twice as long as width of base, 

 symmetrical, the tip not bent upward nor grooved externally as 

 usual in islandicus. Subgenital plate averaging shorter on the 

 dorsal margin than in islandiciis. Prosternal spine conic or cylindro- 

 conic, the apex blunt, well-rounded, in islandicus subpyramidal, 

 acutely pointed, the sides flattened." 



(See Fig. 3 drawing of male cercus.) 



Virginia : Wytheville, Sept. 4, 5, 3000 to 3500 feet. 



