io6 Insecta. Pterodicera. 



fig. 6; Stoll. Gryll. , tab. 12. b. , fig. 43. — Gryllus grossus 

 Fab. ; Panz. Faun. Insect. Germ. , fasc. 33, fig. 7 ; Rms. Ins. , 

 tom. 2, Gryll. , tab. 22 , fig. 1. 2. 



4. Thorax antice subabrupte compresso-angustior , carina nulla 

 aut unica tantum, non cruciatus. 



A. Thorax carinatus. 



a. Sternum anticum cornutum. 



Gryllus tataricus Linn. — G. lineola Fab.; Hersst. Arch. 

 Insect. , tab. 54, fig. 2 ; an prsecedentis varietas ? — G. rufi- 

 cornis Fab. 



b. Sternum anticum muticum. 



* Elytra abdomine longiora. 



Gryllus migratorius Fab. ; Rms. Insect., tom. 2 , Gryll. , tab = 

 24. — Gryllus ccerulescens Fab. ; Panz. Faun. Insect. Germ. , 

 fasc. 87, fig. 11. — Acrydium germanicum Oliv. ; acrydium 

 Geoff. , n°. 3 ; RmS. Insect. , tom. 2, Gryll., tab. 21 , fig. 7. 



** Elytra abdomine non longiora. 



Gryllus stridulus Linn. , Fab. ; acrydium fuliginosum Oliv. ; 

 Panz. Faun. Insect. Germ. , fasc. 87 , fig. 12. 



B. Thorax non carinatus. 



Gryllus ccerulans Linn. , Fab. ; Acrydium Geoff. , n". 1 : 

 Rms. Insect. , tom. 2, Gryll. , tab. 22 , fig. 3. 



5. Thorax cruciatus. 



Gryllus flavus , Linn. africanus ; acrydium nigro-fasciatum , 

 De Geer, tom. 3 , p. 4g3 , pl. 4i , fig. 5 ; acrydium a Stoll, 

 tab. 11. b., fig. 4i , depictumillo proximum, at americanum; 

 ejusdem figura 44 flavo , noslrati prseserlim, magis convenit. — 

 Grylli Linnsei, Fabricii : viridulus , biguttulus. 



