476 Mr. W. F. Kirby on 



A common species throughout the warmer parts of the 

 Old World. 



Gbyllinje. 



Brachytrypes membranaceus. 

 Gryllus membranaceus, Dm. 111. Ex. Ent. ii. pi. xliii. fig. 2 (1773). 

 3, Fort Johnston, Nyasaland (P. Rendall) ; 1, Barberton 

 (Rendall) ; 1, Delagoa Bay (Junod). 

 A common and widely distributed African species. 



Acheta bimaculata. 



Gryllus bimaculatus, De Geer, Mem. Ins. iv. p. 521. n. 4, pi. xliii. fig. 4 

 (1773). 



7, Pretoria (Distant) ; 2, Nyasaland (Rendall) ; 3, Bar- 

 berton (Rendall) ; and 1 without locality. 



One or two of these specimens are immature. 



A common species throughout the warmer parts of the 

 Old World. 



Gryllus domesticus. 

 Gryllus domesticus, Linn. Syst. Nat. (ed. x.1 i. p. 423. n. 20 (1758). 

 6, Fort Johnston, Nyasaland (Rendall). 

 Our familiar house-cricket ; a cosmopolitan species at the 

 present day. 



Gryllus burdigalensis. 



Gryllus burdigalensis, Latr. Hist. Nat. Crust. Ins. xii. p. 124. n. 3 

 (1804) ; Sauss. M6ru. Soc. Geneve, xxv. (1) p. 185 (1875). 



4 ? , Pretoria (Distant). 



A variable and widely distributed species in the Mediter- 

 ranean region, Asia, and Africa. There are also two immature 

 specimens from Pretoria which probably belong to the same 

 species. 



Gryllus posticus. 



Gryllus posticus, Walk. Cat. Derm. Salt. i. p. 30. n. 50 (1869). 

 Gryllus leucostomus, Sauss. M^m. Soc. G6neve, xxv. p. 167 (1877). 



Fort Johnston, Nyasaland (Rendall). 



I think De Saussure is mistaken in referring this species 

 to G. leucostomus, Serv., and therefore prefer to adopt 

 Walker's name for it. 



