LIST OF homoptehous insects. 621 



breadth of the chest between them ; hind appendage 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 Hnes ; of the wings 

 6 lines. 



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



64. Centrotos decisus, Fem. 



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

 libi<e sal lata ; alee anticw subfulva, basi picea, casta basi 

 ferrugineic ; alai postiae limpida. 



Pitchy: head transverse, irregularly triangular, thickly punctured, 

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

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

 broad, slightly truncated in front; hind partsemicircular, occupying a 

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

 whitish down ; fore-chest high in front, roughly ]ninclured, very slightly 

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

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

 diverging, conical, their tips much rounded ; hind side much narrower 

 than cither 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 witli 

 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 punctured 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. 



55. Centbotus invarius, Mas. 



Ferruyineus ; pectus et abdomen picea ; aim antictt sub/ulva, basi 



fulva ,■ ala postica limpida. 



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 



