Ileterocera from Costa Rica. 617 



two-thiids grey, medially irrorated with darker grey and 

 beyond with light brown ; a reniform brownish line at end of 

 cell ; a postmedial brown spot on costa and a larger post- 

 medial spot on inner margin ; vein 6 finely black ; a sub- 

 terminal straight black line from vein S to vein 3, inset below 

 3 and below 2 ; faint traces of a terminal dark line near apex. 

 Hind wings whitish, the veins tinged with brown ; a faint 

 terminal fuscous-grey shade. 



Expanse 33 mm. 



Hab. Avangarez. 



Malocampa matralis^ sp. n. 



? . Head and thorax dull brown, mottled with buff, and 

 some whitish hairs on vertex ; abdomen darker brown above. 

 Fore wings dull brown, shaded with yellowish bufE on inner 

 margin ; traces of a darker geminate antemedial line on costa ; 

 tw^o black spots on discocellular, finely edged with lighter 

 brown ; short postmedial greyish streaks on veins, preceded 

 and foUow^ed by a few black scales ; terminal black spots 

 between the veins; cilia buff at tornu?, otherwise brown, with 

 darker shades at veins. Hind wings dull dark brown; a 

 fuscous-brown spot at anal angle, surmounted by a buff spot; 

 cilia yellowish buff. 



Expanse 50 millim. 



I Jab. Juan Vinas. 



Rhuda difficilis, sp. n. 



? . Palpi and frons mottled brown and whitish buff ; 

 vertex, collar, and thorax brown ; a fuscous-brown shade 

 on collar in front, partly edged wnth white ; a fuscous- 

 brown shade on thorax near collar; patagia shaded with 

 lilacine. Abdomen dull smoky brown above, with yellowish 

 hairs at base, underneath yellowish. Fore wings : base and 

 inner margin broadly dark silky olive, with a whitish patch 

 below median at base and some white and greyish irrorations 

 at base of inner margin; a velvety black basal line, outbent 

 from cell to subniedian and edged with whitish below cell ; 

 a darker olive-brown space on costal margin, its posterior 

 edge shading to black, oblique from costa across cell, straight 

 along vein 4 for half its length, upturned and slightly in- 

 curved on costa near apex ; a narrow white shade follows 

 behind this space, crossed by a dark antemedial line on costa, 

 and a subterminal line from vein 6-8, terminating in a black 

 streak ; a broad roseate shade follows the white from cell to 

 Ann. & Mag. N. Hist. Ser. 8. Vol. vii. 41 



