242 HEMIPTERA-HETEROPTERA. 
LYGDUS, gen. nov. 
Body depresssed and subovate. Head porrect, slightly but obliquely deflexed before eyes, and narrowly and 
longitudinally sulcate; antennz very thickly and strongly hirsute, the basal joint stoutest, much longer 
than the head, the second about half as long again as the first, third and fourth slender. Eyes prominent 
and distinctly separated from the anterior margin of the pronotum. Pronotum with the lateral margins 
suberectly ampliated, somewhat lobately ampliated near anterior margin; a distinct anterior collar, the 
anterior margin about half the width of the posterior, which is truncate at base of scutellum, and then 
oblique to lateral angles, which are non-prominent. Scutellum subtriangular and moderately convex. 
Corium with the costal margins sinuated near the base, and then convexly widened, the extreme margin 
distinctly compressed and ampliated. Cuneus longer than broad, the notch profound. Legs long and 
thickly hirsute. Rostrum reaching the intermediate coxe. 
The general appearance and colour of this extraordinary genus is typical of the 
Lygeide rather than of the Capside. 
1. Lygdus simulans, n. sp. (Tab. XXIV. fig. 16.) | 
Body above black; lateral margins of the pronotum, costal margins and the basal half of the corium, apical 
. half of the clavus excluding the apex, and cuneus ochraceous; body beneath and legs black. 
Long. 10 millim. 
Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion). 
Division VALDASARIA. 
In this division I propose the arrangement of a series of genera in which, like those 
of the preceding division, the head is always, though frequently obscurely, sulcated, 
and sometimes more correctly to be described as excavated; the antenne are inserted 
well in front, but on a level with the inner margin of the eyes. 
The species thus comprised are of a more robust character than those of the Miraria, 
and the colouring is bright and handsome, thus approximating towards the next 
division. 
PIASUS, gen. nov. 
Body elongate, widest at base of pronotum. Head moderately long and porrect, somewhat deflexed towards 
apex and with a distinct and somewhat broad central longitudinal sulcation on disk, which is distinctly 
moderately gibbous ; eyes large and prominent, slightly directed backwards and well separated from the 
anterior margin of pronotum. Antenne with the basal joint stoutest and much longer than the head; 
second joint about half as long again as the first, but more slender, gradually thickened towards apex 
and finely pilose; third and fourth joints short and slender. Pronotum with the posterior margin slightly 
convex and more than twice as wide as the anterior margin, which is distinctly raised, the lateral 
margins sinuate; the lateral angles subprominent; transversely constricted before the middle, between 
which constriction and the anterior margin it is distinctly nodulose, and between the same and the 
posterior margin it is coarsely punctate. Scutellum subconvex and coarsely punctate. Corium with the 
lateral margins subparallel. Cuneus a little longer than broad. Rostrum reaching the intermediate coxa. 
1. Piasus illuminatus, n. sp. (Tab. XXIV. fig. 17.) 
Pale ochraceous, the eyes, apex of head, two discal longitudinal but broken fascie and the lateral angles 
to pronotum, basal angles and a central broad longitudinal fascia to scutellum, inner and outer claval 
