Heterocera from Costa Rica. 591 



narrowing at apex, which is whitish. Hind wings : a nar- 

 rower marginal black, band not reaching termen. 



Expanse 28 mm. 



Hab. Juan Vinas. 



Periclina cervinoides, sp. n. 



(J. Palpi brown ; body buff-brown. Wings buff, thickly 

 striated with light brown. Fore wings : the costa yellowish 

 buff; a fine and indistinct antemedial line, slightly angled ou 

 median, and marked by fuscous points on veins j the outer 

 line fine dark brown, with darker points on veins, followed by 

 white streaks and irrorations on veins, from costa before apex 

 to inner margin beyond middle ; cilia reddish brown ; a tine 

 dark streak on discocellular. Hind wings: a dark line across 

 wing just beyond cell, faintly shaded outwardly with lilacine 

 white. Underneath brownish buff; some black irrorations 

 on outer margin ; a fine fuscous line across both wings, 

 followed on fore wings by black points from vein 4 to costa. 



Expanse 35 mm. 



II ab. Juan Vinas. 



Periclina cervina, Warr., ? , probably belongs to this 

 species. 



Isochromodes sheila, sp. n. 



(J . Antennae fasciculate. Palpi dark grey, fringed with 

 whitish in front. Body and wings lilacine grey, thinly 

 irrorated with fuscous except on thorax ; abdomen with 

 paired dorsal black spots. Fore wings : a finely dentate 

 antemedial and postmedial line, grey-brown, very indistinct, 

 marked by fuscous points on veins, the postmedial terminating 

 below submedian in a black line ; a minute black discal 

 point ; larger subterminal black points on veins, almost obso- 

 lete on vein 4 ; fuscous points on cilia at veins. Hind 

 wings : very faint traces of medial and postmedial brownish 

 lines, the latter punctiform on veins, outwardly pale shaded ; 

 subterminal black points on veins 2, 3, and discal fold ; a 

 black discal point. Underneath white, irrorated with fuscous 

 brown except on inner margin of fore wings, the irrorations 

 forming heavier subterminal shades j a crenulate terminal 

 fuscous- brown line. 



Expanse 31 mm. 



Female : a wavy indistinct medial shade just beyond discal 

 point, suffusing with postmedial at vein 2 and submedian; 

 the lines without dark points ; subterminal spots smaller; 

 the discal spot on hind wings ochreous, edged with black. 



