200 ORTHOPTEKA. 



Statura media. Tibi® posticse superne inermes, apice calcaribus 8. Trocbanterum anteriorum processus 

 brevis. Elytra dimidium abdomen tegentia. Alae caudatae, abdomen superantes. 



Hob. Mexico, Cordova, Cuernavaca, Tabasco {Saussure), Teapa in Tabasco {H. E. 

 Smith) ; Costa Eica (Biolley), Cache {Bogers).— Colombia ; Guiana, Surinam ; Brazil, 

 Bahia ; Peetj, Chincha Is. ; Antilles, Cuba, Guadeloupe. 



A very common species inhabiting the warmer parts of America. 



Uhler distinguishes G. longipennis, Scudd., from G. hexadactyla, Perty, by the 

 elliptic ocelli, these being nearly orbicular in typical G. hexadactyla. We possess 

 specimens of both forms from Mexico, the Antilles, and South America, and also others 

 intermediate ; it seems scarcely possible to separate them. 



The var. azteca, Sauss. (Miss. Scient. Mex., Orthopt. p. 345), from Mexico, &c, is 

 smaller, and has more numerous transverse nervures in the elytra dividing the ulnar 

 cells, and more or less elliptic ocelli. It is scarcely possible to define the limits of 

 this variety and the true hemdactyla. 



2. Gryllotalpa intermedia, Sauss. 



Gryllotalpa intermedia, Sauss. Miss. Scient. Mex., Orthopt. p. 345. 7 ( $ <?). 



Minuta; tibiis postieis supra inermibus, apice calcaribus 8. Processus trochanterum anteriorum brevis. 

 Elytra femora dimidia superantia. Alae caudatae, abdominis apicem attingentes. 



Hab. Mexico, Vera Cruz {Saussure) ; Guatemala. 



SCAPTERISCUS, Scudd. 



Scapteriscus, Scudder, Proc. Bost. Soc. Nat. Hist. xi. p. 385 (1868); Saussure, Miss. Scient. 



Mex., Orthopt. p. 336. 

 Tibiae anticae didactylae. 



1. Scapteriscus mexicanus, Burm. 



Gryllotalpa mexicana, Burm. Handb. ii. p. 740. 9 (1838). 



Scapteriscus mexicanus, Scudd. Mem. Peabody Acad. Sci. i. p. 9, t. 1. figg. 6, 18 (1869) ; Sauss. 



Miss. Scient. Mex., Orthopt. p. 337. 1. 

 Elytra abdomen tegentia. Ultimus articulus tarsorum posticorum baud dilatatus, unguibus sequalibus. 



Mdb. Mexico. — Colombia. 



2. Scapteriscus didactylus, Latr. 



Gryllotalpa didactyla, Latr. Hist. Nat. Crust, et Ins. xii. p. 122 (1802) ; et auctt. 



Scapteriscus didactylus, Scudd. Mem. Peabody Acad. Sci. i. p. 10, t. 1. figg. 1, 14 (1869) ; Sauss. 



Miss. Scient. Mex., Orthopt. p. 338. 

 Elytra abdomen tegentia ; alis caudatis. Ultimus articulus tarsorum posticorum dilatatus, unguibus inaequa- 



libus. 



