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



/^ Cerci of male feebly enlarged apically rather 



than narrowed ater. 



1^. Medium-sized species with tegmina almost 

 always surpassing the hind femora in the male and 

 usually in both sexes ; interspace between meso- 

 sternal lobes of male fully twice, generally more 

 than twice, as long as broad. 



^\ Tegmina more or less, generally distinctly 

 and profusely, maculate, 

 y^. Lateral lobes of prozona with a generally 

 distinct black band, rarely broken and then 



by no conspicuous pale oblique stripe 



devastator. 

 y^ Lateral lobes of prozona with a distinct 

 black band, always broken by a conspicuous 



more or less arcuate oblique pale stripe 



virgatus. 



P. Tegmina immaculate or with the feeblest 



possible signs of maculation. 



j^. Whole body including tegmina very light 



colored, having a bleached appearance with 



no dark markings, except (and very rarely) 



dusky clouds on hind femora uniformis. 



y\ Whole body including tegmina moderately 

 dark, the lateral lobes with a darker stripe and 

 the hind femora distinctly though not conspic- 

 uously bifasciate angelicus. 



^. Apical margin of subgenital plate of male entire ; 

 cerci either broad (broader than the frontal costa 

 or fully as broad as it) and subequal, or else very 

 inequal, taperirtg rapidly at the base and generally 

 arcuate ; hind tibiae usually red. 



i^\ Supraanal plate of male regularly triangular 

 with straight margins ; subgenital plate with a 

 postmarginal tubercle at ajDex (Impudicus series) . . 



impudicus. 

 h^. Supraanal plate of male with the sides more or 

 less irregular or sinuate by lateral compression, or 

 by the depression of the apical half of the plate ; 

 subgenital plate with no postmarginal tubercle. 



