682 CATALOGUE OF 



rounded. Prosternal spine conical, rather long, much broader than 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 SELECTUS. 



Foem. Fulvus, gracilis ; caput et prothorax nigricante bivittata ; caput 

 longiusculum, vitla media nigricante, fastiyio elliptico ; antenna 

 apices versus picece ; prothorax subtilissime scaber, tricarinatus, 

 margine postico subproducto vix angulato ; prosterni spina robusta, 

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

 cante triplagiata, subtus rufa, exlus viridi suffusa; tibiae posticte 

 glauca ; alee anticte pallide cinerece, corpore paullo breviores, vitta 

 costali lata interrupta picea, vitta discoidali e guttis 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 subelliptical, much rounded ou the hind side. 

 Antennae 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 straight; 

 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; hind tibiae 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 interrupted piceous stripe along 

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

 expansion of the fore wings 20 lines. 



, b. Oajaca. From M. Salle's collection. 



16. CALOPTENUS MEXICANUS. 



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

 bistrigatum el bilineatum, vertice fusiformi ; antenna picece ; pro- 

 thorax subtilissime scaber, fusco varius, disco piano tricarinato, 

 margine postico subrotundato ; prosterni spina robusta, conica, 

 transversa ; pedes ferruginei, subtus Jlavescentes, femoribus posticis 

 abdomini aquilongis, tibiis posticis rufis. 



