182 FAMILY Y.— ACRIDIIN^. 



d. Cerci of male simpl}^ spatulate or sub-spatu- 

 late, at most moderately broad, apically 

 entire and no broader than at base; furcula 

 always developed as distinct denticulations. 



e. Furcula of male not more than a third as 

 long as the supra-anal plate; tegmina 

 lightly maculate or immaculate. 



angustipennis. 



ee. Furcula of male more than a third as 



long as the supra-anal plate; tegmina 



usually heavily maculate impiger. 



dd. Cerci of male apically bifurcate, or with an 

 inferior sub-median process or abrupt an- 

 gulation, or else expanded so as to be dis- 

 tinctly, gen'i^rally much, broader apically 

 than at theextreme base; furcula wanting 

 or minute. 



e. Size smaller or medium ; cerci of male al- 

 ways bifurcate or with an inferior sub- 

 median process or angulation; supra- 

 anal plate pretty regularly triangular 

 with straight or feebly convex lateral 

 margins: furcula usually distinctly de- 

 veloped; prosternal spine usually short. 



f. Furcula of male consisting of slender 

 spines, longer than the last dorsal 

 segment ; base of lateral margins of 

 sub-genital plate incurved minor. 



11. Furcula of male consisting of brief 

 triangular lobes; base of lateral 

 margins of sub-genital plate not in- 

 curved hiridus. 



