LIST OF HOMOPTEROUS INSECTS. 621 



breadth of the chest between them ; hind appendap:e extending to 

 half the length of the abdomen, forming a compressed almost conical 

 hump which inclines slightly forward, its disk on each side is con- 

 cave: legs stout; feet ferruginous ; hind-shanks beset with a row of 

 short black spines: wings lurid ; fore-wings lanceolate, punctured at 

 base ; veins ferruginous. Length of the body 3 lines ; of the wings 

 6 lines. 



a. Hong Kong. Presented by J. C. Bowring, Esq. 



54. Centrotus decisus, Fern. 



Piceus ; pectus albo pitbescens ; abdomen rufum, apice piceum ; 

 tibice sat latce ; alee anticce subfufvce, basi picea, costce basi 

 ferruyinecE ; alee posticce limpidce. 



Pitchy: head transverse, irregularly triangular, thickly punctured, 

 slightly impressed, notched and very slightly retuse on each side in 

 front, a little narrower than the fore-chest between the shoulders ; face 

 broad, slightly truncated in front ; hind part semicircular, occupying a 

 little less than half the length of the head ; epistoma covered with 

 whitish down : fore-chest high in front, roughly punctured, very slightly 

 ridged, rising vertically above the head ; ^houlders angular, not pro- 

 minent ; horns above them very thick, prismatic, ascending, slightly 

 diver*iing, conical, their tips much rounded : hind side much narrower 

 than either of the other sides ; length of the horns much exceeding 

 the breadth of the chest between them ; hind appendage extending 

 far beyond the tip of the abdomen, slightly curved, tapering from the 

 base to the tip which is acute ; sides of the scutellum clothed with 

 tawny down : breast clothed with whitish down : abdomen dark red, 

 pitchy at the tip : shanks rather broad : fore-wings lanceolate, slightly 

 tinged with tawny, pitchy and ])unctured at the base, ferruginous at 

 the base of the fore border ; veins ferruginous ; three discoidal areo- 

 lets : hind-wings colourless ; veins pale yellow. Length of the body 

 4 lines ; of the wings 8 lines. 



a. New Holland. From Mr. Argent's collection. 



bb. Centrotus invarius, Mas. 



Ferrugineus ; pectus et abdomen picea ; al(B antica subfulva, basi 

 fulvcB ; alee posticcB limpidie. 



Ferruginous, clothed with tawny hairs : head transverse, very 

 little narrower than the fore-chest between the shoulders : fore-chest 

 rather low, finely punctured, very slightly ridged, rising almost ver- 



2 I 



