FAMILY VI.-LOCUSTID^. 237 



of head, and four front femora, reddish-^^ellow. All the tibi^ 

 and tarsi, together with the apical third of hind femora, 

 black or dark brown. 



Measurements. — Male: I^engtli of body, 18 mm.; of 

 pronotum, 5 mm.; of tegmina, 21 mm.; of hind femora, 16 

 mm. Female: Length of body, 19 mm.; of tegmina, 22 

 mm. ; of hind femora, 17 mm. ; of ovipositor, 9 mm. 



Not uncommonly found in low places along the Missis- 

 sippi River, where it seems to prefer to dwell on such plants 

 as the Smartweed. 



GENUS Xiphidium Serville (1831). 



Very closely allied to the genus Orchelimum, from which 

 it can hardly be separated. The species, however, are much 

 smaller and more graceful, and the ovipositor is straight in- 

 stead of curved. Wings as long, longer or shorter than the 

 abdomen. Wing-length in this genus, and in Orchelimum, 

 isacharacternotto be relied upon as a specific or even a vari- 

 etal difference. 



These light-green grasshoppers are found in large num- 

 bers in our meadows and moist pastures. Here the}' give 

 concerts from the middle of summer till the autumn. Insects 

 belonging to this genus possess no conical projections upon 

 their heads. 



We have in Minnesota several species of these insects, 

 and no doubt still others will be found. 

 A, Ovipositor shorter than the body, 

 b. Ovipositor straight. 



c. Wings a little longer than the wang-covers ; the 



latter always iully developed fasciatum. 



cc. Wings shorter than the wang-covers; the latter 



variable in length hrevipenne. 



bb. Ovipositor a little curved; tegmina constant in 

 length, covering about two-thirds of the abdomen 



in the male; shorter in the female nemorale. 



AA. Ovipositor equal to or longer than the body. 



