FAMILY v.— ACRIDIIN.H. 183 



ee. Size medium or large ; cerci of male rarely 

 bifurcate or with an inferior process 

 (and then the insect is of a large size, 

 which it never is in the alternate cate- 

 gory, and the supra-anal plate is dis- 

 tinctly shield-shaped, the apical half 

 tapering with much greater rapidity 

 than the basal; or the furcula is ab- 

 sent ; or the interspace between the 

 mesosternal lobes of the male is three 

 times as long as broad, which it never 

 is in the alternate category) ; supra- 

 anal plate of variable shape; furcula 

 either absent or very minutely devel- 

 oped ; prosternal spine usually long. 



f Interspace between mesosternal lobes 

 of ma^e nearly, fully, or much more 

 than twice as long as broad; of female 

 generally as long as broad, rarely 

 quadrate; prosternal spine generally 

 long; tegmina usually clear, or with 

 a marked distinction in color be- 

 tween the dorsal and lateral areas, 

 or with the angle between the two 

 marked by a conspicuous light col- 

 ored stripe; head less prominent and 

 with less prominent eyes than in the 

 alternate category, the front margin 

 of the pronotum in no way flaring 

 to receive the head. 



g. Furcula of male entirel}- absent, or 

 present only as a minute point 

 or bead; hind tibiae generally 

 vellow, but sometimes red. 



diflerentialis. 



