614 LIST OF HOMOPTEROUS INSECTS. 



hind border ; veins ferruginous, pitcliy along the fore borders: hind- 

 wings colourless. Length of the body 3 lines ; of the wings 8 lines. 



a. Ceylon. Presented by Dr. Hooker. 



^42. Centrotus malleolus, Mas. 



Nigro-ci/aneus ; pectus et abdomen nigra ; pedes nigri ; tarsi ferru- 

 ginei ; alee antics luridce hasi picece^ margine postico sub- 

 limpidce. 



Nearly allied to C. ynalleus, thinly clothed with pale hairs : head 

 and fore-chest dark blue: head transverse, finely punctured, almost 

 triangular, much narrower than the fore-chest ; face prominent, a 

 little shorier than the hind part of the head: mouth ferruginous: 

 fore-chest convex, hardly ridged, roughly punctured, clothed with 

 pale hairs along the fore border, deep in front, rising vertically from 

 the head; shoulders obtusely angular, not prominent; horns above 

 them broad, thick, prismatic, diverging, hardly inclined backward, 

 shorter than half the length of the space between them ; sides 

 conical ; upper side broader than either of the lower sides which are 

 slightly concave; hind horn almost horizontal, slightly curved down- 

 wards towards the tip, forming a very acute angle with the abdomen 

 and about twice its length, thick at the base, slender trilateral taper- 

 ing and almost smooth from thence to the tip which is very acute 

 and extends very far beyond the tip of the abdomen ; sides slightly 

 concave : breast, abdomen and legs black ; knees and feet ferrugi- 

 nous: fore-wings lurid, pitchy, at the base of the fore border, almost 

 colourless along part of the hind border; veins pitchy, lurid towards 

 the tips: hind- wings pale. Length of the body 3^ lines; of the 

 wings 7^ lines. 



a. Java. From Mr. Argent's collection. 



43. Centrotus erigens, Fern. 



Niger ; abdomen cinereo suffusum ; alee sublimpidce ; alee anticce 

 nigro-fusco marginatce. 



Black: head and fore-chest roughly punctured: head trans- 

 verse, much narrower than the fore-chest : fore-chest convex, slightly 

 ridged, very deep in front, rising vertically from the head; shoulders 

 obtusely angular, hardly prominent; horns above them broad, thick, 

 prismatic, diverging, very slightly inclined backwards and down- 

 wards, as long as the space between them ; sides conical, sightly and 

 irregularly ridged, of almost equal breadth; hind horn very deep at 



