( l-';5 ) 



2A4. Petelia purpurea sjjec. nov. 



Forcirin;/ : pinkish ochreous, toivards costa and hiodmargiii tinged with dnli 

 fulvous; basal and marginal areas deep plum-colour, formed of coalescent striae; 

 lines undefined ; first near l)ase, indicated by a fnlvons spot on costa and dark 

 spots on veins ; a thick shade curving oljliipiely inwards before the middle ; in 

 the paler central area is a black cell-spot, followed by an outer line marked by 

 black sjiots on the veins, outwardly bent at veins 3 and 4, before which beud the 

 ground colour is olive-brown ; fringe plum-colour. 



Ilindwiiui : with the basal area narrowly plum-coloured, the outer margin 

 fulvous-tinged, with plum-colonred striae only at apex, and a few towards anal 

 angle; fringe fulvous. 



Underside duller ; both wings with diffuse plum-coloured marginal clouds. 



Head, thorax, and dorsum j)lum-coloured ; rest of abdomen and anal segment 

 above ochreous. 



Expanse of wings : 30 mm. 



1 ? from Santo Domingo, ('arabaya, .S.E. Peru, 6UOO ft., November lOnl, 

 wet season (Ockenden). 



Prostoma gen. nov. 



Foreidng : costa faintly curved ; hindmargin irregularly excised from vein 7 

 to 4, the sinus from 4 to G deeper; vertical from apex to 7 and forming a blunt 

 projection between 4 and 3, then oblique and concave to anal angle, which is 

 well marked. 



Hinrhchtg : with hindmargin deeply crenulate, especially beyond cell. 



Forehead with a strong pointed peak of hairs below ; palpi porrect, de- 

 cumbent, twice as long as head, flattened, rough-haired above and below, the 

 terminal segment acute ; antennae simple ( ? ) ; tongue and frenulum present, but 

 weak. 



Neuration : forewiug, cell quite half of wing; discocellular vertical; first 

 median nervule at about one-half, second close before third ; radials normal ; 

 7, 8, 9, stalked from some distance before end of cell; 10, 11 free; hindwing 

 with costal and subcostal approximated for half cell, 7 just before end ; no radial ; 

 medians as in forewing; all the veins slender ani weak. 



Ty])e : I'rosfoma J'raiiilis spec. nov. 



20.5. Prostoma fragilis spec. nov. 



Forctcinij : white, thickly striated throughout with fascnus, exce]it along 

 the course of outer line, where the white ground is slightly more conspicuous ; 

 the lines dark ; first at one-third, forming a curve above and below the median ; 

 outer line from two-thirds of costa to four-fifths of inner margin, concave outwards 

 aud dbliqne to vein 0, there angled, outcurved and crenulate to vein ~, 

 forming a sinus inwards to vein 1 and there dentate outwards ; a cloudy darker 

 fuscous submarginal shade, forming a blotch below vein ; cell-spot black, distinct ; 

 marginal line blackish, interrupted at veins ; fringe fuscous grey, with a paler 

 line at base. 



Hindwing : whiter, without basal line. 



Underside similar to upper, the basal half of both wings darker ; the blotch 

 in submarginal line of forewing below vein (i conspicuously dark. 



