Capside. ee 
exceptions to the rule; rostrum four-jointed; pronotum 
variable in form, sometimes constricted in front into a 
narrow collar, sometimes with the front margin callose, 
occasionally with the sides costate, base sinuate or rounded ; 
scutellum exposed, sometimes spinose ; elytra composed of 
corium, clavus, cuneus, and membrane, generally fully 
developed, but shortened and more or less rudimentary in 
some species, especially in the ?. In some genera, Bryo- 
coris, Allodapus, etc., the developed form of either sex is 
very scarce ; the membrane has usually two basal cells, 
but occasionally only one, and no discal nervures except 
those enclosing the cells; wing cells with or without 
a hook-like nerve. The meso- and metasternum are 
divided by sutures into three parts, the sternum and a 
pleura on each side of it; the abdomen has two genital 
segments exposed, the apical one open above and holding 
the genital armature; in the ? three genital segments 
appear, and a distinct ovipositor lies along the centre of 
the segments beneath; legs simple, cox very largely 
developed, especially the anterior pair, tibia often with a 
row of fine spines, tarsi three-jointed. 
All the species occur in summer and early autumn, and 
subsist on the juices of leaves, ete. 
(12) 1. Head channelled in the centre or trans- 
versely impressed on the vertex; 
anterior margin of pronotum not 
; callosely raised. 
(11) 2. First joint of the posterior tarsi much 
longer than the second. 
(6) 3. Head channelled down the middle. 
(5) 4. Base of pronotum truncate, covering 
the base of the punctured scutelluam Murs. 
(4) 5. Base of pronotum emarginate, not 
covering the base of the impunctate 
scutellum . , : ; A . MbGALocerma. 
(3) 6. Head transversely impressed on the 
vertex. 
(8) 7. Eyes not, or svarcely, projecting beyond 
the lateral margin of the pronotum ACETROPIS. 
(7) 8. Eyes prominent, projecting consider- 
ably beyond the lateral margina of 
the pronotum, 
