»50 CATALOGUE OF 



*** Prolhoras non crislatus. 

 t Oculi eluugati, vix prouiinuli. 

 X Femora postica lonira. 



§ Prosterui spina robusta, obliqua, sxptssime arcuata el mesolhoraceui 

 attingens. 

 -j- Prolhoras non tricariuatv.s. 



Genus S. CYRTACANTHACRIS. 



Acridiuin, Div. 1, Serv. Div. 2, A, Bunn. 



This genus is disiin<zuished by the curved and oblique prostemal 

 spine, which in the tvpical species extends to the fore border of the meso- 

 steruum. It includes several groups. 



The ion? \vin£rs of the American species here described distinguish 

 them from C. Milberti, and their unspotted hinJ wings distinguish them 

 from C. cribrata. 



• Nortli America, 



]. GVRTACANTHACRIS MiLBEBTt. 



Acridium Milberti, Serv. Hist. Orlh. 6iS. 

 Xorih America. 



2. CrBTACANTHACKIS AmERICAXA. 



Grylliis Americanus, Druri/, Ins. i. 128, pi. 49, f. 2 — Locusta Tarlarica, 

 nVs/ir. ed Drury, i. 121 , pi. 49, f. 2 — Acridium Americanum, Scudder, 

 Bost. Soc. Xdt. Hist. 1S62, 466. 



a, h. Georgia. Preseuted by E. Doubleday, Esq. 

 West Indies. 



3. CVRTACASTHACKIS IXSCKIPTA. 



FcBiu. Fulra, sat gracilis; rertex lineis duobus nigris gutlularibus, 

 antice depre$sus hexagonalis ; anteniue picete, bast fulvie ; prothorax 

 rittis sex ni^ris abbreviitis aut interruptis ; femora postica nigro 

 punctata et bistrigdta ; alit antictE cinerecE, vitla discoidali interrupta 

 guadriramosa guttisqiie subcostalibus e renis nigris ; alct poslicte 

 pallide ciiierea. * 



Female. Tawny, rather slender. Head smooth, with two lines of 

 black dots converging from the hind border to ihe hexagonal depressed 

 compartment in front of the eyes: from almost perpendicular, with four 

 keels, of which the outer pair diverge towards the face, and the inner pair are 

 almost parallel. Eyes oblique, elongate-oval. Anienna? piceous. slender, 

 filiform, tawny al the base. Prothorax minutely scabrous, with six black 

 stripes, the iuuer pair much iutenupted. the two ouier pair much abbre- 

 viated: dorsal riuge slight, most distinct towards the hind border; four 

 transverse impressed lines, the front line iiUerrupted in the middle: the 

 breadth increasing from the hind line to the base of the fore wings ; sides 



