ACRTDIDJi;. 593 



veined spots. Hind wings cinereous; veins black. Length of the body 

 21 lines ; expansion of the fore wings 44 lines. 



The prothorax of this species is almost crested, and it is more allied 

 than the other Acridia to Tropidacris. 



a. Australia. Presented by the Haslar Hospital. 



57. ACRIDIDM .ANGUSTIFRONS. 



Fcjem. Fulvum, gracile ; vertex inter oculos transverse sulcatus, anlice 

 planus subhexagonalis ; prothorax vix carinatus ; prosterni spina 

 longa, robttsla, suhohliqua ; femora postica niyro utrinque himacii- 

 lata ; alee anticte cinerece, nigro guttatcB, corpore vix breviores. 



Female. Tawny, slender. Head smooth, with a transverse furrow 

 between the eyes, which are very approximate on the vertex; fore part of 

 the latter flat, subhexagoual ; front narrow, punctured, with four strongly- 

 marked keels, of which the inner pair are almost parallel, and the outer 

 diverge towards the face. Eyes piceous, fusiform. Prothorax very finely 

 scabrous, with an extremely slight keel and with four slight transverse 

 impressed lines ; fore border and sides slightly rounded ; hind border more 

 rounded. Prosternal spine long, stout, slightly oblique. Hind femora as 

 long as the abdomen, longer than the hind tibia, with two large black spots 

 on each side. Spines of the hind tibice black towards the tips. Fore 

 wings cinereous, almost as long as the body, with many black ddts on the 

 anteir.edial half; transverse stctois in the postmedial hiilf mostly black. 

 Hind wings cinereous; veins mostly black. Length of the body 16 lines; 

 expa\ision of the foie wings 32 lines. 



The approximate eyes and the transverse furrow between them 

 distinguish it from the other species of Acridinm, 



a. North Australia. Presented by J. R. Elsey, Esq. 



58. ACRIDTUM IfUBCIFEKUM. 



Foem. Ferrugineum, sal gracile ; caput brevissimum, vertice suh- 

 carinnlo anlice piano prominulo brevi-conico ; antenna; nigrce, 

 plana ; prothorax subcarinatus ; prosterni spina crassa, apice 

 f areata ; tibice postica rufa: ; alee anlica corpore vix breviores ; alee 

 posticce cinerea, nigro venosa. 

 Female. Ferruginous, rather slender. Head very short; vertex 

 slightly keeled ; its foie part flat, prominent, short-conical ; front with four 

 distinct keels which diverge towards the face. Eyes piceous, fusiform. 

 Antenna? black, rather flat. Prothorax finely scabrous, with a slight keel 

 and with transverse impressed lines; fore border slightly rounded ; sides 

 nearly straight ; hiud border much rounded. Prosternal spine thick, fur- 

 cate at the tip. Hind femora sliorter than the abdomen, a little longer 

 than the bind tibiae ; the latter red, their spines with black tips. Fore 

 wings nearly as long as the body. Hind wings cinereous ; veins black. 

 Length of the body 21 lines; expansion of the fore wings 44 lines. 



