160 NEW NORTH AMERICAN MELANOPLI (oRTHOPTERA) 



Allotype. — 9 ; same data as male. [Hebard Collection.] 



Agrees with type except in the following features. Size larger, form slightly 

 more robust (averaging decidedly smaller and more slender than in females of 

 brevipennis) . Diagnostic features of coloration as given for male, except that 

 the medio-longitudinal dorsal stripe of the pronotum is proportionately nar- 

 rower (normally for the series, but in a few specimens proportionately fully as 

 wide as in the male and unicolorous, not paler mesad than laterad), and 

 longitudinal humeral band of the tegmina proportionately much narrower, so 

 that more of the surface of the insect is green. Ovipositor valves normal for 

 the genus. 



Measurements {in millimeters) 



The Pensacola series shows no difference from that from Carra- 

 belle, except in the slightlj^ but distinctly longer tegmina and 

 wings and in a greater size variation between the extremes. 

 This species occurs in very dry environment and at Pensacola 

 was taken at two widely separated situations, the optimum 

 examples coming from the less extreme of these. The Carra- 

 belle examples were all taken over an area showing the extreme 

 condition of drjmess and much more exposed to storms than at 

 the points about Pensacola where the insect was collected. It 

 would appear from the evidence that local environmental condi- 

 tions explain all the size variation which occurs, while it is 

 probable that the slight reduction in tegminal length is a response 

 to the more exposed and wind-swept character of the coast at 

 Carrabelle. 



Head courge green, usually with a very small black marking extending 

 ventrad from the lower margin of the eye. Eyes metalhc cinnamon brown. 

 Antennae vinaceous-rufous. Pronotum courge green; with a medio-longitu- 

 dinal band, which is flesh color with lateral margins heavily but narrowly 

 suffused with cameo brown; lateral lobes with a broad blackish band, slightly 

 ascendent cephalad, which extends caudad to the principal sulcus and is 



