so.1124. REVISION OF THE MELANOPLI SC UDDER. 13 



longer than the him! femora and only twice as long as the pronotum 

 alone ; face rarely as decli vent as in Paroxya ; prozona usually a half 

 longer than the metazona. 



r/^ 1 . Head not large in proportion to pronotum, nor prominent, but 

 little longer than the prozona, unless (as in Melanoplus spretus) 

 the latter is distinctly transverse ; pronotum in no way subsellate, 

 nor flaring in front ; tegmina, when fully developed, narrow, rarely 

 (Melanoplus dawsoni, 1 M. extremus, M. marginatus, etc.) rather broad, 

 but then very distinctly tapering, more or less tapering in distal 

 half, at a distance from the apex equal to the breadth of the teg- 

 mina distinctly narrower than the metazona. the intercalaries,aud 

 cross- veins of the discoidal area (except in M. dawsoni completes and 

 M. marginatus ampins) relatively numerous, at least in the apical 

 fourth and usually throughout, the venation in general sharp and 

 clearly defined, the area intercalata generally distinctly defined 

 by the adjustment of the veins at its distal extremity, the humeral 

 veiu straight and apically arcuate, nearly always terminatingeither 

 on the apical margin or but a short distance before it, running for 

 some distance almost exactly parallel to the costal margin or merg- 

 ing insensibly into it; cerci of male very variable, very rarely 

 (Melanoplus flabellatus, M. puer) substyliform, and then the sub- 

 genital plate is either exceptionally broad, or only moderately nar- 

 row and the apical margin elevated 23. Melanoplus (p. 120). ^"" 



j 2 . Head large in proportion to pronotum, especially above, and 

 prominent, nearly half as long again as the long prozona; pro- 

 notum faintly subsellate, feebly flaring in front to receive the head ; 

 tegmina, when fully developed, broad and subequal, hardly taper- 

 ing in the distal half, at a distance from the apex equal to the 

 breadth of the tegmina as broad as the metazona, the intercalates 

 and cross-veins of the discoidal area everywhere few, the venation 

 in general loose and ill defined, the area intercalata not distinctly 

 marked by the adjustment of veins at its distal extremity, the 

 humeral vein (the upper of the pair of stout veins from the upper 

 attachment) broadly sinuous, terminating on the costal margin 

 at least as far before the apex as the breadth of the tegmina, 

 nowhere running closely parallel to that margin nor merging into 

 it; cerci of male styliform, the subgenital plate very narrow, the 



margin not apically elevated 24. Plwetalioies (p. 376) 



i 2 . Dorsum of pronotum twice as long as average breadth, at least 

 in the male, with no median constriction; antennae, at least in 

 the male, generally longer than the hind femora and much more 

 than twice as long as the pronotum, generally twice as long as 

 head and pronotum together; face more declivent than in Melan- 

 oplus; prozona only about a third longer than the metazona. 



25. Paroxya (p. 380). 



h 2 . Inferior genicular lobe of hind femora wholly pallid, with no dark 

 basal spot or transverse band ; cerci of male conical or subconical or 

 basally bullate, always apically pointed. 



1 1 . Subgenital plate of male terminating in a pronounced tubercle; 

 prosternal spine slender 26. Poecilotettix (p. 385). ^r 



1 2 . Subgenital plate of male, even when apically augulate, not fur- 

 nished with an apical tubercle; prosternal spine stout. 



j } . Relatively heavy-bodied; dorsal disk of prozona tumid inde- 

 pendently of the metazona ; pronotum distinctly augulate or cj>n- 



1 In form of tegmina and sparseness of neuratiou this species is the Melanoplus 

 most nearly allied to PhoetaUoten, and like it it is dimorphic as to tegmina. 



