54 GUIDE TO ORTHOPTERA 



CONOCEPHALINAE. 



Two of the four tribes of this subfamily occur in the United 

 States, but are also found elsewhere, being widely distributed 

 over the globe. 



Tribes of Conocephalinae. 



a 1 . Fore and middle femora spined beneath. Conocephalini. 



a 2 . Fore and middle femora unarmed beneath. Xipliidiini. 



Conocephalini. 



Redtenbacher recognizes twenty-five genera in this tribe, of 

 which only the four following occur in the United States, all 

 but one of them also found further south. 



Genera of Conocephalini. 



a 1 . Prosternum unarmed. . . Copiophora Serville. 



a 2 . Prosternum armed with two spines. 



b *. Tegmina lobiform ; wings wanting. JBelocephalus Scudder. 

 b 2 . Tegmina and wings perfectly developed. 

 c J . Fastigium of vertex triquetral, fiat above. 



Pyrgocorypha Stal. 

 c 2 . Fastigium of vertex conical, convex above. 



Conocephalus Thunberg. 



Copiophora is not indigenous, but has been taken in the green- 

 houses at Washington, D. C. Belocephalus is a monotypic genus 

 only known from Florida. A single species of Pyrgocorypha is 

 known in eastern America, but of Conocephalus, a dominant 

 genus, our species are numerous and widely spread over the 

 country. 



Xiphidiini. 



Redtenbacher recognizes three genera in this tribe, with only 

 one, a cosmopolitan genus, occurring in the United States. 



