174 HEMIPTERA-HETEROPTERA. 
1. Ploiariopsis megalops, Tab. X. figg. 21, 21a.) 
Very sparsely pubescent, opaque ; the head and the pro- and mesonotum ochraceous, slightly mottled with 
fuscous, the mesonotum with two fuscous lines on the middle of the disc; the elytra ochraceous, 
reticulated with fuscous, and with a narrow oblique fuscous fascia near the apex ; the abdomen and under 
surface nigro-piceous ; the antenne ochraceous, with the first and second joints fuscous at the apex; the 
rostrum and anterior legs ochraceous, annulated with fuscous; the intermediate and hind legs ochraceous, 
the femora with two whitish and two fuscous rings towards the apex, the tibie with two whitish rings 
at the base; the coxee and trochanters fuscous. Head with the eyes wider than the base of the mesonotum, 
with two prominent tubercles before the transverse inter-ocular groove and one behind it, and a short 
erect spine in the centre of the basal declivity, the eyes very large; antenne with joints 1 and 2 
exceedingly elongate, 2 slightly shorter than 1, each fringed all round with long, fine, projecting hairs, 
8 and 4 short and subequalin length. Pronotum oblong-subquadrate, the basal margin moderately raised. 
Mesonotum longer than the pronotum, subconical, distinctly margined at the sides, the disc deeply sulcate 
down the middle and also finely canaliculate, the basal margin quadrituberculate. Scutellum with a 
small pallid tubercle. Anterior femora with a row of five long spines on the outer edge beneath, arising 
from conical teeth, and some short spines between them, and also with a row of short spines along the 
inner edge, amongst which are about four longer ones intermixed. 
Length (to apex of the elytra) 5 millim. (?¢.) 
Hab. Panama, Volcan de Chiriqui (Champion). 
One example, in perfectly preserved condition. ‘The anterior femora are armed with 
moderately long spines, these alternating, on the outer edge, with two short spines. 
2. Ploiariopsis predator, n. sp. (Tab. X. figg. 22, 22 a.) 
Very sparsely pubescent, opaque, nigro-piceous, the head and the disc of the pro- and mesonotum ochraceous ; 
the elytra pale ochraceous, reticulated with fuscous ; the antennz brownish-ochraceous, with the first 
joint whitish at the base ; the legs brownish-ochraceous, all the femora speckled with fuscous to the base, 
the intermediate and hind pairs blackish at the apex. Head with the cycs as wide as the hase of the 
mesonotum, grooved down the middle before the transverse groove and with an interrupted median carina 
behind it, the eyes moderately large; antenne with joints 1 and 2 each fringed all round with long, fine, 
projecting hairs (8 and 4 injured). Pronotum narrowed behind, the basal margin greatly raised and 
forming a very prominent collar. Mesonotum much longer than the pronotum, subconical, shallowly 
sulcate down the middle and obsoletely margined at the sides. Scutellum with a pallid tubercle. 
Anterior femora with two rows of five or six very long spines, alternating with shorter spines, the longer 
ones arising from conical teeth, which are longer on the outer than on the inner edge. 
Length (to apex of the elytra) 53 millim. (? d.) 
Hab. Guatemata, Capetillo (Champion). 
One example. In this species the long spines on the anterior femora are, with the 
conical tubercles from which they arise, nearly as long as the tarsi, and between them 
there is an alternating series of single shorter spines. 
PLOTARIA. 
Ploiaria, Scopoli, Del. Flor. et Faun. Insubr. i. p. 60 (1786) ; Reuter, Act. Soc. Fenn. xv. p. 718. 
Cerascopus, Heineken, Zool. Journ. v. p. 36 (1830) ; Stal, Enum. Hemipt. ii. p. 127, and iv. 
pp. 938, 95. 
Emesodema, Spinola, Essai Hémipt. p. 87 (1837); Dohrn, Linn. Ent. xiv. pp. 218, 246. 
Of this genus we possess a mutilated specimen of a species evidently different from 
