NOVITATES ZOOLOGICAE XXV. 1918. 197 



2nd joint black-brown above except towards extremity and the 3rd joint with 

 some black-brown at sides ; abdomen dark brown irrorated with some grey, 

 especially towards extremity ; pectus and legs white irrorated \vith dark brown, 

 the fore tarsi banded with chocolate-brown, the mid tarsi deep chocolate-brown 

 except towards base ; ventral surface of abdomen banded white and chocolate- 

 brown. Forewing white tinged in parts with pink and irrorated with chocolate- 

 brown and some blackish, the costal area suffused with chocolate-brown from 

 the antemedial Une to apex, where it narrows to a point, the cell on medial area 

 also suffused wdth chocolate-brown extending to below the cell just beyond the 

 antemedial line, some rufous suffusion beyond end of cell ; an obUque sinuous 

 blackish subbasal Une from below costa to inner margin ; antemedial line black, 

 oblique to submedian fold, then excurved and ending at vein 1, a small black 

 spot beyond it below the cell ; orbicular whitish with some red-brown in centre, 

 round ; a curved black discoidal striga ; postmedial line double, the inner Hne 

 black, the outer chocolate-brown, black towards inner margin, sinuous, slightly 

 excurved beyond the cell ; subterminal Une with obUque white striga from 

 costa, then double, chocolate-brown, sinuous to vein 3, below which it is sUghtly 

 angled inwards, then obUque to tornus, crossed by a black streak from beyond 

 upper angle of cell and with another black streak beyond it below costa ; two 

 white points on costa towards apex and a series of black striae before termen. 

 Hindwing very dark chocolate-brown with a cupreous gloss, the ciUa wliite at 

 tips. Underside deep chocolate-brown ; forewing with the costal edge white 

 except towards base, interrupted by a small chocolate-brown spot at middle 

 and short streaks towards apex. 



Hah. Jamaica (Jackson), 1 $ type. Exp. 40 mUl. 



Genus Plectothripa nov. 



Tj'pe : P. excisa. 



Proboscis fully developed ; palpi upturned, the 2nd joint reaching to about 

 vertex of head, moderately scaled in front and angled \\ith hair above at middle, 

 the 3rd very long and smoothly scaled ; frons smootli, with ridge of hair above ; 

 eyes large, round ; antennae of male laminate and with short bristles ; thorax 

 clothed ahnost entirely witli scales and without crests ; build slender ; tibiae 

 sUghtly fringed with hair ; abdomen with dorsal crests on two basal segments 

 only, long. Forewing long and narrow, the apex rounded, the termen obUque 

 below vein 4, crenulate ; veins 3 and 5 from near angle of cell ; 6 from just below 

 upper angle ; 7 shortly stalked with 8, 9 ; 10, 11 from cell. Hindwing with the 

 termen crenulate to vein 2, excised at vein 1 and obliquely truncate at tornus ; 

 the ceU more than half the length of wing and rounded at upper and lower 

 extremities ; vein 2 from towards angle of cell ; 3, 4 from angle ; 5 fuUy developed 

 from just above angle and strongly curved upwards ; 6 from long below upper 

 angle ; 8 closely approximated to the cell and vein 7 to well beyond the ceU ; 

 the discal and submedian folds strong, the former curved upwards, the latter 

 just below the cell ; the retinaculum curled and covered by a tuft of hair, the 

 raised scales in the ceU sUght. 



In key differs from Elesnw in the palpi being upturned with the 3rd joint 

 very long, the abdomen with two basal crests, the hindwing with veins 3, 4 

 from angle of cell. 



