ACRIDHXE. 611 



CYRTACANTHACRIS UNILINEATA. 



Mas. Viridescens, sat gracilis; caput et prothorax flavo unilineata ; 

 caput vertice piceo, fasligio magno hexagonali ; antennee fulvce, 

 robustce ; prothorax scaber, piceo plagiatus, carina lene determinata ; 

 prosterni spina pallide flava, robusta, obliqua, mesosternum attingens ; 

 pedes fulvi, femoribus poslicis extus albidis, spinis albidis apice 

 nigris ; al<e cinerece, corpore paullo breviores, piceo venosce. 



Male. Dull green, rather slender. Head and prothorax with a 

 slender yellow stripe. Head smooth, short; vertex piceous; tip depressed, 

 hexagonal; front tawny, coarsely punctured; keels well defined; inner 

 keels nearly parallel, slightly curved inward in the middle; outer keels 

 diverging towards the face. Eyes lurid, fusiform. Antennae tawny, rather 

 stout. Prothorax scabrous, with a well-defined keel; five or six piceous 

 patches on each side; transverse impressed lines distinctly marked ; fore 

 border and sides very slightly rounded; hind border much rounded. Pro- 

 sternal spine pale yellowish, stout, oblique, extending to the mesosternum. 

 Legs tawny; hind femora longer than the abdomen, whitish and with tes- 

 taceous ridges on the outer side; hind tibiae almost as long as the hind 

 femora ; spines whitish, with black tips. Wings cinereous, a little shorter 

 than the body; veins piceous. Length of the body 10 lines; expansion of 

 the lore wings 20 lines. 



a. Indiana. Presented by F. Walker, Esq. 



CYRTACANTHACRIS DIVERSIFERA. 



Fcem. Testacea, sat robusta, subtus nigro varium ; caput rufum. fastigio 

 longi-quadrato ; prothorax subcarinatus, subtiliter scaber, disco 

 antico rufo, vittis duabus macutaribus nigris; prosterni spina 

 robusta, arcuata, obliqua mesosternum attingens ; femora postica 

 nigro fasciata et maculata; tibice posticce nigro spinosce ; alee anticce 

 cinerea, corpore breviores. 



Female. Testaceous, rather stout. Head red, smooth, paler in front ; 

 fore part of the vertex depressed, elongate-quadrate; front thinly punc- 

 tured, with four distinct keels; inner keels very slightly converging from 

 the middle to each end ; outer pair diverging much towards the face. Eyes 

 piceous, irregularly oval, tessellated with testaceous. Prothorax finely 

 scabrous, red between the fore border and the fourth transverse impressed 

 line, with a slight keel which is slightly interrupted by the distinct trans- 

 verse impressed lines; keel not rounded ; three black spots forming a short 

 stripe on each side; fore border hardly rounded; sides slightly rounded; 

 hind border much rounded. Prosternal spine stout, curved, oblique, 

 extending to the fore border of the mesosternum, which has a blackish spot 

 on each side. Borders of the pectoral segments black. Abdomen with 

 various black marks. Hind femora as long as the abdomen, with angular 

 black bands and with lower black spots on the outer side ; hind tibiae rather 

 shorter than the hind femora, their spines black. Fore wings cinereous, 

 shorter than the body; veins tawny, reddish towards the base. Hind 



