H8^ CATALOGUE OF 



rounded. Prosternal spine conical, rather lon^, much broader tiian thick. 

 Hind femora as long as the abdomen ; hind tibiae rather shorter than the 

 hind femora, their spines with black tips. Wings cinereous, nearly as long 

 as the body. Fore wings with tawny veins. Hind wings with black veins. 

 Length of the body 10^ lines ; expansion of the fore wings 20 lines. 



a. Arctic America. Presented by Dr. Rae. 



Mexico. 



A. Prosternal spine not transverse. _ - - - selectus. 



B. Prosternal spine transverse. - - - Mexicanus. 



C. selectus has the typical structure of the genus. C. Mexicanus has 

 some affinity to Heteracris. 



15. Caloptenus selectos. 



Fcem. Fulvus, gracilis ; caput et prothorax nigricante biviitala ; caput 

 longiusculum, villa media nigricante, fasligio elliptico ; antenncB 

 apices versus picece ; prothorax subtilissime scaber, tricarinalus, 

 margine postico subproducto vix angulalo ; prosterni spina robustu, 

 longi-conica ; femora postica abdomine paullo lungiora, supra nigri- 

 cante triplagiala, subius rufa, exlus viridi svjfusa ; libixe postica 

 glaucce ; alee auticce pallide cinerece, corpore paullo breviores^ villa 

 costali lata inlerrupta picea, villa discnidali e gutlis nigris. 



Female. Tawny, slender. Head and prothorax with a blackish 

 stripe on each side. Head smooth, slightly elongate ; vertex with a broad 

 blackish stripe ; tip depressed, elliptical ; front with four keels which are 

 less distinct towards the face; inner keels nearly parallel; outer keels 

 diverging slightly. Eyes subelli])tical, much rounded on the hind side. 

 Anlennffi slender, piceous towards the tips. Prothorax very finely scabrous 

 disk flat, with three distinct keels; transverse impressed lines well defined 

 stripe on each side limited by the fourth line; fore border nearly straigiit 

 sides slightly rounded; hind border slightly elongated, hardly angular. 

 Prosternal spine stout, elongate-conical, rather long. Hind femora a little 

 longer than the abdomen, partly tinged with green on the outer side, with 

 three blackish patches above, bright red beneath ; bind libise glaucous- 

 green, a little shorter than the hind femora, their spines black towards the 

 tips. Fore wings pale cinereous, a little shorter than the body, with a row 

 of black dots in the disk, and with a broad inlerru|)led piceous stripe along 

 the costa. Hind wings with black veins. Length of the body 10 lines ; 

 expansion of the fore wings 20 lines. 



a, 6. Oajaca. From M. Salle's collection. 



16. Caloptenus Mexicanus. 



Mas. Viridescens, gracilis, subtus fiavus ; caput longiusculum, fusco 

 bislrigatum et bilineatum, vertice fusiformi ; anlennce picece ; pro- 

 thorax subtilissime scaber, fusco varius, disco piano tricarinato, 

 margine postico subrolundato ; prosterni spina robusta, conica, 

 transversa ; pedes ferruginci, subtus Jlavescentes, femoribus posticis 

 abdomini aquilongis, tibiis posticis rufis. 



