REHN AND HEBARD 155 



STUDIES IN AMERICAN TETTIGONIIDAE 

 (ORTHOPTERA) 



V 



BY JAMES A. G. REHN AND MORGAN HEBARD 



A SYNOPSIS OF THE SPECIES OF THE GENUS 



CONOCEPHALUS (XIPHIDIUM OF AUTHORS) 



FOUND IN NORTH AMERICA NORTH OF 



MEXICO^ 



CONOCEPHALUS Thunberg 



1815. Conocephalus Thunberg, ]\lem. Acad. Imp. .Sci. St. Petersbourg, v, 



p. 271. 



1829. Anisoptera LatreiUe, Regne Anim., Ed. 2, v. p. 184. 



1831. Xiphidion Sen-ille, Ann. Sci. Xat., xvii, p. 159. 



1838. Xiphidium Burmeister, Handb. Entom., ii, abth. ii, pt. i, p. 707. 



1869. PaloUa F. Walker, Cat. Dermapt. Salt. Brit. Mus., ii, p. 249. 



1912. Conocephalus Karny, Gen. Ins., Orth., Subf. Conocephalinae, p. 8. 



Genotype (by tautonymy). — Conocejjhalus heniiptenis Thun- 

 berg =Conocephah(s conocephalus [Locnsta conocephalus] (Fabri- 

 cius) . 



This genus is a member of the Tettigoniidae and of the sub- 

 family Conocephalinae, and has been placed by Karny at the 

 end of his restricted subfamily Conocephalinae, after the very 

 closely allied genus Orchelinmm. It is evident, however, that 

 the North American genus Odontoxiphidium should be placed 

 at the end of this group, following the present genus. 



It is extremely important to note that the many subgenera of 

 Conocephalus are readily separable one from the other by one 

 or more striking characters in every instance, while the genus 

 Orchelinmm, though forming a distinct unit which is readily 

 recognizable in the vast majority of specimens examined, affords 

 no single constant character for its ready separation from the 

 present genus. 



1 Published with the aid of the Orthoptera Fund. 



TRANS. AM. ENT. SOC, XLI. 



