THE SPECIES OF THE GENUS MELANOPLUS. [Jan. ir>, 



Table of the Species of Melajioplus. 



A^. Tegmina conspicuously shorter than the abdomen, often no 

 longer than pronotum ; furcula almost always developed feebly, 

 generally no longer than the last dorsal segment from which it 

 arises. 



b'^. Cerci of male expanding and bullate from the base outward, 

 abruptly tapering and bent inward at tip ; subgenital plate of 

 male abruptly elevated apically (Lakinus series). 



<r\ Interspace between mesosternal lobes of male nearly twice 

 as long as broad ;^ of female, fully half as broad again as 



' long marculenUis. 



c^. Interspace between mesosternal lobes of male distinctly less 

 than twice as long as broad ; of female, barely broader or not 

 broader than long. 



d^. Hind femora heavily fasciate above and on the outer 



face ; hind tibiae blue throughout lakinus. 



(P. Hind femora with feeble signs of bifasciation above only, 



if at all; hind tibiae pale red, apically infuscated . ..sonorce. 



b'^. Cerci of male tapering in the basal half, usually from the very 



base, sometimes throughout, usually laminate ; subgenital plate of 



male of variable elevation apically. 



c^. Cerci of male beyond the middle either equal or tapering, 

 sometimes simply styliform throughout, the tip usually more or 

 less pointed, but sometimes broad or truncate f metasternal 

 lobes of male attingent or subattingent. 



d^. Cerci of male very broad and short, not more than twice 

 as long as the middle breadth, broadly rounded at apex 

 ^ (Flabellifer series). 



e^. Tegmina about half as long as the abdomen and much 

 longer than the pronotum ; cerci of male not longitudi- 

 nally sulcate apically. 

 /\ Interspace between mesosternal lobes of male twice 

 as broad posteriorly as anteriorly, the inner margins of 



1 This interval is of various shapes in different species of Melanoplus, cunei- 

 form, clepsydra! or rectangular, but for the purposes of this table the middle 

 breadth is always taken. 



2 The cerci are faintly enlarged apically in M. ineridionalis and M. walshii, 

 which come under this division. See also the note under the alternate category. 



