(i08 LIST Ol' HOMOl'TEBOUS INSECTS. 



rather broad ; veins ferruginous ; two diRcnidal areolets : hind-wings 

 paler. Length of the body 2 lines ; of the wings 4i lines. 

 a, h. Brazil. Presented by John Miers, Esq. 



21. Centkotus altifrons, Fern. 



Niger ; sctitellum piceum ; abdomen nipra cinereum ; pedes picei ; 

 femora nigra ; alw anticte subluriace ; ala posticai limpida. 

 Body black, thickly clothed with tawny hairs : head transverse, 

 flat, thickly punctured, a little narrower than the fore-chest between 

 the shoulders, slightly undulating along the hind border, very slightly 

 reluse in front ; hind part of the face angular, about half the length 

 of the head behind it: fore-chest roughly punctured, very deep in 

 front, rising vertically from the licad ; shoulders angular, not pro- 

 minent; horns above small, prismatic, horizontal, diverging, curved 

 backward, very .slender towards their tips which are very acute ; their 

 length rather less than half the breadth of the chest between them ; 

 hind appendage very slender, extending to the tip of the abdomen, 

 slightly curved downward, tapering from the base to the tip which is 

 verv acute; its lower side raised high above the scutellum which is 

 pitchy, and has a semicircular concave tip with a spine on each side : 

 abdomen gray above: legs pitchy; thighs black: fore-wings pale 

 lurid, lanceolate: veins ferruginous, clothed with tawny hairs; two 

 (liscoidal areolets : hind-wings colourless. Length of the body 3i 

 lines ; of the wings 7 lines, 

 o. Congo. Presented by Sir J. Richardson. 



22. CeNTROTUS TAUBIERONS, Mas. 

 Niger ; ala anticre subluridte ; alee posticre limpidtE. 



Black : head transverse, very short, hardly narrower than the 

 fore-chest between the shoulders, thickly punctured, convex along 

 the hind border, notched and slightly refuse on each side in front ; 

 its breadth full twice its length with the exception of the face which 

 is conical, very prominent, and has a lobe on each side : fore-chest 

 very deep in Iront, roughly punctured, very slightly ridged, rising 

 vertically from the head ; shoulders rounded, not ])rominent; horns 

 above long, prismatic, very broad, diverging, curved backward, al- 

 most horizontal ; hind side not more than half the breadth of either 

 of the other sides ; length of the horns much more than twice the 

 breadth of the chest between them ; hind appendage slender, extend- 

 ing beyond the lip of the abdomen, hardly curved downward, taper- 



