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



midal, nor elevated apically except by a 

 minute apical tubercle ; furcula minute, 

 overlying the supraanal plate by a less 

 distance than the length of the last dorsal 

 segment ; cerci of male bent roundly in- 

 wards at the apex nigrescens. 



/■". Subgenital plate of malesubpyramidal, 

 broadly and roundly elevated at apex ; 

 furcula well developed, reaching middle 

 of supraanal plate ; cerci very feebly in- 

 curved apically dawsoni. 



Ji-. Interval between mesosternal lobes of male 

 subquadrate, often gradually widening posteriorly ; 

 hind tibiae usually red (Rusticus series). 



/\ Apical margin of subgenital plate of male 



more or less elevated or tuberculate, or both, 



generally well rounded, as seen from above, 



never transverse. 



y\ Tegmina attingent or overlapping ; cerci 



of male apically rounded ; furcula distinctly 



developed ; subgenital plate relatively long, 



subequal in breadth. 



k^. Interspace between the eyes of male 

 broader than the first antennal joint ; cerci 

 of male with arcuate upper margin ; subgen- 

 ital plate apically elevated to a greater or 

 less degree, but never conspicuously. 



/\ Prosternal spine transverse, apically 

 truncate or subtruncate ; interspace be- 

 tween mesosternal lobes of female slightly 

 transverse; subgenital plate of male mod- 

 erately narrow jnonfanus. 



P. Prosternal spine subconical, bluntly 

 pointed ; interspace between mesosternal 

 lobes of female broadly transverse, some- 

 times as broad as the lobes. 



w\ Interspace between mesosternal 

 lobes of female narrower than the lobes ; 

 cerci of male subequal throughout. 

 n^. Prozona but little longer than the 



