THE CANADIAN ENTOMOLOGIST. Ill) 



available method of fixing the original name to some part of the genus 

 to which it was originally applied is by the process of elimination, sub- 

 ject to the single modification provided for by Canon XXIII." The last 

 mentioned Canon is as follows ; " If, however, the genus contains both 

 exotic and non-exotic species — from the standpoint of the original author 

 — and the generic term is one originally applied by the ancient Greeks or 

 Romans, the process of elimination is to be restricted to the non-exotic 

 species." Of the six Linntean subgenera — Mantis, Bulla, Acheta, Acrida, 

 Tettigonia and Locusta — four are classic : Mantis, Acheta, Tettigonia 

 and Locusta. 



The momentous question of the type of the blanket genus Gryllus, 

 is now of importance, and, as Linnaeus left no section of his genus as a 

 restricted Gryllus, we are compelled to examine the subsequent writers 

 for the first restriction of the genus to one of its component sections. 

 De Geer (Mem., III., p. 505, 1773) is the first author who attempts to do 

 this, and he considers that Gryllus should only be used for the subgenus 

 Acheta, the last eliminated species of which is accordingly the type of 

 Gryllus. 



The treatment of each subgenus in detail will give a more compre- 

 hensive explanation. 



Mantis. 



gigas = Eremoplana, Stal, 187 1. 



phthisicus =- Musonia, Stal, 1877. 



siccifolius = Phy Ilium, Illiger, 1798. 



gongy lodes = Gongylus, Thunberg, 181 5. 



religiosus. 



oratorius = Iris, Saussure, 1872. 



precarius = Stagmatoptera, Burmeister, 1838. 



bicornis = Schizocephala, Serville, 1831. 



tricolor — Harpax, Serville, 1839. 



strumarius = Chceradodis, Serville, 1831. 



As Linnteus really never considered any of the species as European,, 

 we must treat them all, the result being that religiosus is the type. 



Bulla. 



unicolor = Pneumora, Thunberg, 18 10. 



variolosus = Pneumora, Thunberg, 18 10. 



serratus = Prionolopha, Stal, 1873. 



carinatus = Xiphocera, Latreille, 1825. 



