LOPHOSEMA,—POLIOTHRIPA, 3383 
dark brown defined on each side by greyish towards costa and on 
outer side towards inner margin, strongly bent outwards below 
costa, then acutely bidentate to discal fold, excurved to vein 8, then 
bent inwards to below end of cell and acutely bidentate above inner 
margin; subterminal line ochreous white, curved, minutely dentate 
with slight blackish streaks before it extending to postmedial line 
below veins 8 and 6 and above 1| and with slight dark streaks beyond 
it; a fine black terminal line defined on inner side by a fine ochreous 
line; cilia red-brown mixed with ochreous, Hind wing whitish 
suffused with brown, the interspaces semihyaline except towards 
termen ; some blackish bars with whitish between them on inner 
margin at tornus; cilia ochreous white at base and whitish at tips; 
the underside whitish, the costal and terminal areas suffused with 
brown. 
Hab. Costa Rica, Tuis (Schaus), 1 go; Fr. Guiana, St. Laurent 
Maroni. Erp. 44 millim. Type tin U.S. Nat. Mus. 
Genus POLIOTHRIPA, nov. 
Type, P. ameria. 
Proboscis fully developed ; palpi upturned, the 2nd joint reaching to vertex 
of head and moderately scaled, the rd long and dilated at extremity ; frons 
with pointed conical prominence; eyes large, round; antennz of female 
ciliated; thorax clothed almost entirely with scales and without crests; tibiee 
moderately fringed with hair; abdomen with dorsal crests on basal segments. 
Fore wing with the apex rounded, the termen evenly curved and _ slightly 
crenulate; veins 3 and 5 from near angle of cell; 6 from upper angle; 9 
from 10 anastomosing with 8 to form a long areole; 11 from cell. Hind 
wing with veins 3, 4 from angle of cell; 5 fully developed from above angle ; 
6, 7 from upper angle; 8 anastomosing with the ceil near base only. 
6638. Poliothripa ameria. 
Polia ameria, Druce, P.Z.8. 1890, p. 515; id. Biol. Centr.-Am., Het. ii. 
Ds Bk, fol BEE tts Ue 
®. Head and tegule whitish mixed with biown, the latter fus- 
cous at tips; 2nd joint of palpi and sides of frons brown ; thorax 
white with some brown and black scales; pectus and legs tinged 
with ochreous brown, the tarsi fuscous ringed with white ; abdo- 
men whitish dorsally mixed with brown. Fore wing whitish 
mixed with fuscous black; subbasal line double, sinuous, from costa 
to submedian fold; antemedial line double, sinuous, angled out- 
wards belew vein 1, then oblique to inner margin, the outer line 
forming a wedge-shaped blackish patch at costa; claviform and 
orbicular absent ; reniform an oblique blackish lunule with obscure 
whitish annulus; medial line indistinct, waved, bent outwards in 
cell; postmedial line black, oblique from costa to vein 4 where it 
is acutely angled, then bent inwards to lower edge of reniform and 
again slightly outwards above inner margin, some black points 
beyond it on costa; subterminal line blackish, angled outwards 
