710 LIST OF HOMOPTEROUS INSECTS. 



17. Ptyelus adustus. 



Ferrugineus ; caput nigra triguttatum ; fades ad discum picea ; 

 abdomen piceum, basi apiceque testaceum ; alee anticcE fuscce, 

 fulvo nebuloscB. 



Ferruginous, shining: head and chest flat, thicUy and mi- 

 nutely punctured, covered with tawny down, slightly shining: head 

 concave along the hind border, more convex in front, with three 

 black dots near together on the fore border; face pitchy and flat 

 on the disk, tawny and slightly shelving on each side, which has 

 eight or nine oblique, very shallow cross ridges; epistoraa keeled : 

 mouth pitchy, ferruginous at the base: feelers black, pale yel- 

 low towards the tips : chest slightly impressed on each side in 

 front: abdomen pitchy, testaceous at the base and at the tip: 

 fore-wings brown, thickly and indistinctly mottled with tawny, 

 narrow and conical towards the tips: hind-wings colourless with 

 pale brown tips; veins black, pale yellow at the base. Length 

 of the body 3^ — 4 lines; of the wings 9 — 10 lines. 



Var. ^. Brown on the tips of the hind-wings very indistinct. 



a. Congo. Presented by Sir J. Richardson. 

 6,c. ? 



Var. ^. Luridus ; fades picea ; pectus piceo bimaculatum ; abdo- 

 men basi piceum ; pedes fulvi; femora basi piceo vittala. 



Lurid, shining : head and chest flat, thickly and minutely 

 punctured, covered with tawny down : head concave along the 

 hind border, more convex in front ; its length full one-fourth of 

 its breadth ; face mostly pitchy, flat on the disk, slightly shelving 

 on each side ; epistoma very slightly keeled : tip of the tnouth 

 black : breast with a large pitchy spot on each side ; abdomen 

 pitchy towards the base • legs tawny ; thighs with pitchy streaks 

 towards the base : fore -wings pale lurid, covered with tawny 

 down : hind-wings almost colourless ; veins black. Length of the 

 body 3| lines ; of the wings 8 lines. 



a, b. Sierra Leone. Presented by the Rev. D. F. Morgan. 

 c. West Africa. From Mr. Fraser's collection. 



