FAMILY v.— ACRIDIIN^. 179 



iasciatus Scudder; cxtremus Walker; comptus Scudder; 

 Packardii Scudder; infantilis Scudder \ viola Thomas; and 

 femoratus, Burmeister, but no specimens have been seen by 

 the writer. 



A. Tegmina conspicuously shorter than the abdomen, 

 often no longer than pronotum ; furcula* almost al- 

 ways • developed feebly, generally no longer than the 

 last dorsal segment from which it arises, 

 b. Cerci of male beyond the middle either equal or 

 tapering, sometimes simply styliform throughout, 

 the tip usually more or less pointed, but some- 

 times broad or truncate; metasternal lobes of 

 male attingent or sub-attingent. 

 c. Prozona, at least in male, mucli longer than 

 broad, the disk of the whole pronotum more 

 than twice as long as the middle breadth, the 

 median carina percurrent, equal ; interval be- 

 tween mesosternal lobes of male twice as long 



as broad Scudderi. 



cc. Prozona, even in male, transverse, sub-quadrate 

 or slightly longitudinal, the disk of the whole 

 pronotum less than twice as long as middle 

 breadth, the median carina often sub-obsolete 

 between the sulci; interspace between the 

 mesosternal lobes of the male not more than 



half as long again as broad Dawsoni. 



bb. Cerci of male more or less expanded apically, so as 

 to be broader at some point below the middle 

 than at the middle, spatulate or sub-spatulate; 

 metasternal lobes of male separated by a vari- 

 able interval, 

 c. Sub-genital plate of male short and broad, its 

 apical breadth equal to or surpassing the 

 length of its lateral margin Blatchleyi. 



•Prof. Scudder calls tiie processes of last dorsal segment of the male abdomen 

 the furcula. 



