70 FHlemiptera-tleteroptera. 
NYSIUS, Dull. 
A genus of small ochreous species ; eyes prominent, pro- 
jecting beyond the anterior angles of the pronotum, sides 
of the head converging rapidly behind them, antenniferous 
tubercles angularly produced ; pronotum trapezoidal ; elytra 
semi-transparent, membrane hyaline ; orifice of the odori- 
ferous sac large and surrounded by a smooth elevation. 
All the species are somewhat closely allied, and some of the 
continental forms, of which Dr. Horvath records ten, are 
very hard to separate with certainty. 
) 1. Seutellum with a pale central keel : 5 . LINEATUS. 
) 2. Scutellum without a pale central keel . : . THYMI. 
(2 
qd 
N. lineatus, Cost. (erice, Boh. nee Schill.; brunneus, 
Fieb.; Scotti, Saund.).—Ochreous. Head and pronotum 
strongly punctured with black, with a pale line round 
each eye, and a pale central lobe to the face; antenne 
brownish black, paler in the middle ; pronotum with a pale 
raised central line, sides straight, with an impressed line 
running parallel to them on the disc ; scutellum with a raised 
central keel, punctured; elytra smooth, impunctate, 
shining, pale ochreous, apex of the corium darker; mem- 
brane hyaline ; abdomen mottled with blackish brown, legs 
ochreous spotted with black. 
L. 4-5 mm. 
On heaths, Woking, Chobham; Sandpit Shalford, H. A. 
Butler ; Bournemouth, Dale. 
N. thymi, Wolf (maculatus, D. § S.)—Very like the 
preceding, but shorter and broader; the pronotum more 
transverse and less widened posteriorly, with only an in- 
dication of a central keel, close to the anterior margin, 
and a dark band across the anterior impression ; elytra 
whitish ochreous, shining, with the apical margin blackish 
brown, sides more rounded than in lineatus, membrane 
somewhat dusky; underside of head and thorax largely 
black ; abdomen ochreous with black markings; legs 
