20 THE SPECIES OF THE GENUS MELANOPLUS. [Jan. 15, 



h>. Cerci of male regularly subfalciform, by both 

 margins being uniformly and distinctly curved 

 rather than bent, and more than twice as long as 



median breadth alaskanus. 



h . Cerci of male nearly straight as viewed later- 

 ally, or slightly bent upward in apical half, rather 

 than curved. 



/\ Cerci of male distinctly more than twice as 

 long as median breadth, the apical half subequal 

 but narrower than the basal half. 

 J \ Hind tibiae normally pale glaucous ; when 

 red, pale red. 



k^. Larger, robust ; median carina usually 

 as distinct between the sulci as on the ante- 

 rior portion of the prozona affinis. 



k^. Smaller, slender ; median carina usually 

 obsolete or subobsolete between the sulci . . 



iftterjnedms. 



J'. Hind tibiae bright red bilitiiratus. 



P. Cerci of male not more than twice as long 

 as median breadth, the apical half not only nar- 

 rower than the basal half, but itself tapering 

 throughout, obliquely truncate beneath ; hind 

 tibiae usually red.* 

 y\ Tegmina brief, not nearly reaching the 

 tips of the hind femora ; apical margin of 



subgenital plate of male greatly elevated 



defecius. 

 y^ Tegmina reaching, generally considerably 

 surpassing, the tips of the hind femora ; apical 

 margin of subgenital plate of male moderately 



elevated atlanis. 



g-. Tegmina extending beyond hind femora by the 

 length of the pronotum or nearly as much, often by 

 the length of head and pronotum combined ; pro- 

 zona of male generally strongly transverse ; cerci of 



male not more than half as long again as broad 



spretus. 

 <?^ Breadth of subgenital plate of male variable but gen- 

 erally narrower than long, its apical margin usually entire ; 



