Tingidide. 127 
Not common, in moss, &c. Reigate, Knowle, Blatch ; 
Shirley, Caterham, Champion ; Fifeshire, Power ; Coombe 
Hurst, Croydon, Douglas and Scott ; Glanvilles Wootton, 
Dorset, and High Bickington, Devon, Dale. 
O. parvula, fal/.—The smallest of our species, dull 
grey or, if immature, more or less testaceous. Head black, 
with two short paler frontal spines or processes, antenni- 
ferous tubercles obtuse, antennz testaceous, apical joint 
black, third suddenly enlarged at the extreme base; pro- 
notum with three longitudinal keels, the central one cresting 
the largely-developed elevated and areolated hood of the 
anterior margin, sides with two rows of meshes, base pro- 
duced into an acute angle—the angle longer and more acute 
in the developed form ; elytra, sutural area with one row of 
meshes at the base, increasing to two, three, four, as it 
approaches the apex, or expanding in the developed form 
into a regular finely reticulated membrane, with five to 
seven rows of meshes across its widest part, discoidal area 
with five to six rows in the middle, lateral four to five, mar- 
ginal with one, or just at the base, with two; abdomen 
brown; legs testaceous. 
L. 14 mm. brach., 2} mm. macr. 
The macropterous form is quite unlike the brachypterous 
in shape, and in general appearance resembles a Monan- 
thia. 
Common and generally distributed, found in moss at the 
roots of grass in sandy places, etc. 
QO. nigrina, /al/.—More convex than either of the 
preceding, grey. Head black, with two short blunt spines on 
the forehead, antennz with the third joint very slightly and 
gradually widened towards the base and paler than the 
others ; pronotum with the anterior margin produced 
and hooded, sides rounded, with two to three rows of 
meshes, base produced in an obtuse angle, disc with three 
areolated carinz, the central one extending to the front 
margin and cresting the hood, the lateral ones abbreviated ; 
