LIST OF HOMOPTEKOUS INSECTS. 93 



converging towards the vertex, where they are connected ; sides 

 widening towards the face, which is triangular, has an indistinct 

 ridge on each side, and is closely connected with the front. Thorax 

 very small. Fore wings narrow ; veins and veinlels few, quite 

 parallel and regular. Hind vvings slightly cinereous ; veins black, 

 very few. Length of the body 2 lines ; of the wings 4 lines. 



a, Philippine Isles. From Mr. Wood's collection. 



Genus HYSTEROPTERUM, Cat. Horn. p. 373. 



HVSTEROPTERUM TRUNCATUM. 



Testaceum, latum, fusco varium ; vertex transversus, depressus^ 

 lateribus suhelevatis ; frons elongata, subobliqua, tricarinata, 

 antice latior ; fades lanceolata, subtus retracta ; al(S anticcB 

 lata, fusco conspersce, extus dilatatcB, basi tuberculatce, lituris 

 discalibus nigricantibus, angulo exteriore rotundato^ mteriore 

 acuto ; posticcB cinerece, venis nigris. 



Testaceous, broad, varied with brown. Vertex transverse, de- 

 pressed, its borders slightly elevated ; front slightly oblique, much 

 longer than broad, with three keels, the lateral pair converging at 

 each end ; sides slightly elevated, somewhat dilated and curved 

 towards the face, which is lanceolate and retracted beneath. 

 Prothorax transverse, short-conical in front. Fore wings broad, 

 widening exteriorly, truncate along the exterior border, minutely 

 speckled with brown, slightly tuberculate towards the base, with 

 some blackish marks in the disk towards the exterior border ; ex- 

 terior angle rounded ; interior angle acute ; veins and veinlets some- 

 what irregular. Hind wings gray ; veins black. Length of the 

 body 3 lines ; of the wings 7 lines. 



a. Java. Presented by J. C. Bowring, Esq. 



Hystergpterum gibbipenne. 



Testaceum ; vertex perangustus, lateribus setosis valde elevatis antice 

 nigro guttatis ; frons longissima, perangusta, carinata, linearis, 

 lateribus valde elevatis; mesothorax nigro trivittatus ; abdo- 

 men gibbosum, subtus nigrum, segmentis rufo marginatis ; alee 

 anticce subluridce, semivitrece, costa subconcava, margine in- 

 teriore nigro convexo, venis piceis ; posticce subcinerece, venis 

 nigris. 



