286 OETHOPTEBA. 



sounds are produced by the rough surface of the inner base of the hind femora rubbing 

 against the short elevated ridges or rugosities on the first segment of the abdomen. 

 This apparatus is similar to that of a portion of Acridiidse, especially of the Eremobiinae 

 and of some Pamphaginse *. 



We find in the tribe Stenopelmatinse two very different types, as in Gryllidse : 

 a fossorial type, with heavy forms, short robust legs, and strongly armed tibiae 

 (Tab. XIV. fig. 1) ; and a terrestrial type, with lighter forms and long legs (Tab. XIV. 

 figg. 12, 19, &c). The latter do not appear to live so much amongst the grass and 

 bushes as the Gryllidse ; they cannot leap very well, but are good runners. 



Group STENOPELMATITES. 



STENOPELMATUS, Burm. 



Stenopelmatus, Burmeister, Handb. ii. p. 720 (1832) ; — Saussure; — Stal; — Brimner v. Wattenwyl, 

 Monogr. der Stenopelm. und Gryllacr. p. 13 f. 



Synopsis specierum. 

 a. Corpus totum apterum. 

 b. Pedes ferruginei. 



c. Scutellum faciale A -forme, superne parabolicum, per carinam vel sulcum distincte 

 delineatum, sulco intramarginali supero notatum. — 1. sumichrasti, Sauss. 

 cc. Scutellum faciale latum, inter antennas articulo primo antennarum triplo vel quadruplo 

 latius, obsolete delineatum, superne obtusissimum. 

 d. Tibiae posticae margine interno spinis 5 armatae. 



e. Caput ab antico visum quam pronotum baud latius. 



/. Tibiarum posticarum calcaria interna subaeque longa ; calcar supero-internum 

 metatarso brevior. Caput et pronotum rufo-ferruginea. 

 g. Tibiae posticae a latere visae latse, planae, supra convexiusculae. — 2. talpa, 

 Burm. 

 gg. Tibiae posticae extus teretes. — 3. lessona, Griff. 

 ff. Tibiae posticae longiores quam in congenericis, graeiliores, a latere visse apicem 

 versus gradatim dilatatae, extus planae ; calcare supero-interno caeteris valde 

 longiore, metatarsum superante. Caput et pronotum fulvo-testacea vel 

 castanea. — [4. longispina, Brunn.] 

 ee. Caput ab antico visum pronoto latius. Tibiae posticae a latere visae apicem 

 versus ampliatse. (Color testaceus vel testaceo-castaneus.) 



* De Saussure, Additamenta ad Prodromum (Edipodiorum, p. 114. 



t Obs. — Brunner v. Wattenwyl uses the term "fastigium verticis " for the apex of the vertex between the 

 antennae, this being called by us " rostrum verticis." In the diagnoses which we have been obliged to take 

 from the works of this author (as we have seen no specimens of the species) we have preserved his nomenclature. 



