ACRIDHXE. 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. ACRIDIUM ANGUSTIFRONS. 



Foem. Fulvum, gracite ; vertex inter oculos transverse sulcatus, antice 

 planus subhexagonalis ; prothorax vix carinatus ; proslerni spina 

 longa, robusta, subobliqua ; femora, postica nigro utrinque bimacu- 

 lata ; alee anticce cinerece, nigro guttatce, corpore vix breviores. 



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

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

 the latter flat, subhexagonal ; 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 tibiae, with two large black spots 

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

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

 antemedial half; transverse sectors in the postmedial half mostly black. 

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

 expansion of the fore wings 32 lines. 



The approximate eyes and the transverse furrow between them 

 distinguish it from the other species of Acridium. 



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



58. ACRIDIUM FURCIFERUM. 



Foem. Ferrugineum, sat gracile ; caput brevissimum, vertice sub- 

 carinato antice piano prominulo brevi-conico ; antenna; nigrce^ 

 plants ; prothorax subcarinatus ; proslerni spina crassa, apice 

 furcata ; tibia posticce ruf& ; alee anticce corpore vix breviores ; alee 

 posticce cinerece, nigro venosce. 



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

 slightly keeled ; its fore 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 ; hind border much rounded. Prosternal spine thick, fur- 

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

 than the hind 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. 



