ACR1DIDJ5. 507 



formed by l>lack veins. Hind winp:s cinereous; veins black, tawny at the 

 base. Length of the body 27 lines; expansion of the fere wings 54 

 lines. 



a. Cerain. From Madame Ida Pfeiffer's colleclioD. 



35. Cyrtacanthacris fortis. 



Foem. Fulva, robusla ; prothorax subcarinatus ; prosterni spina robusla, 

 recta, obtiqua, mesoslernum non attingens ; femora poslica el abdomen 

 cequi-longa ; ahe antica: cinerece, corpora longiores, basi obscuriores ; 

 alcE posliccE cinerecE, hyalince, veiiis nijris basi pallide teslaceis. 



Female. Tawny, stout. Head smootb ; fore part of the vertex 

 hexagonal ; front with four well-defined keels, the inner pair diverging 

 slightly towards ihe face, the outer pair much diverging. Prothorax 

 scabrous, with a slight dorsal keel and with the usual four transverse 

 impressed lines; fore border rounded; sides hardly undulating; hind 

 border much rounded. Prosternal spine slout, straight, oblique, not 

 extending to the mesosternum. Hind femora as long as the abdomen and 

 as the hind tibisE ; spines of the latter with black tips, much longer on the 

 inner side than on the outer side. Fore wings cinereous, longer than the 

 body, somewhat dusky at the base. Hind wings cinereous; veins black, 

 pale testaceous towards the base. Length of the body 26 — 33 lines ; 

 expansion of the fore wings 54 — 72 lines. 



«, b. Philippine Isles. From Mr. Cuming's collection, 

 f. ? 



36. Cyrtacanthacris parvula. 



Mas. Flavescens, gracilis ; caput viltis duabtis ferruijineis postice valde 

 dilatalis, strigis duubus laieralibun piceis lanceolalis ; antenna: rufcc ; 

 prothorax vittis duabus latis ferrugineis picco submarginatis, viltis 

 diiabns ex terioribus piceis ; prosterni spina albida, gracilis, arcuata, 

 mesosternum altingens ; femora postica et abdomen aquilonga ; alee 

 anticce cinerece, corpore vix breviores ; alee posticcB diaphance, vcnis 

 nigris basi pallide cyaneis. Foem. ? — Major ; tibicc posticce valde 

 longiores. 



Male. Yellowish, slender. Head smooth, with two ferruginous 

 stripes, which are much widened ou each side of the hind border; fore part 

 of the vertex hexagonal, a piceous lanceolate streak extending frpm each eye 

 to the mouth ; front punctured, with four well-detined keels, the inner 

 keels hardly or very slightly diverging, the outer slightly diverging towards 

 the face. Eyes piceous, elongate-elliptical. Antennae red. Prothorax 

 finely scabrous, with a very slight dorsal keel and with the usual four 

 transverse impressed lines; hind part and iwo broad stripes ferruginous; a 

 piceous line along the outer side of each stripe; two exterior piceous 

 snipes ; fore border and sides slightly rounded ; hind border much rounded. 

 Prosternal spine whitish, slender, curved, extending to the fore border of 

 the mesosternum. Hind femora as long as the abdomen, much longer than 

 the hind libis ; spines of the latter white, small, with black tips. Fore 

 wings cinereous, nearly as long as the body ; veins tawny or whitish testa- 

 ceous, reddish along the basal part of the hind border. Hind wings 



