Heterocera from Costa liica. 9 



Mastitis poasalisj sp. n. 



c? . Palpi outwardly, head, collar, and thorax dark brown. 

 Abdomen luscous. Fore wings dark brown, somewhat j)alcr 

 between postmedial and subtenninal lines from vein 5 to 

 inner margin; anteniedial line fine, pale brown, outcurved 

 across median, outbent from fold, outwardly dark-edged; 

 orbicular small, fuscous brown; a white line on discocellular ; 

 postn;ediaI fine, light brown, inwardly dark-edged, abnost 

 vertical to vein 4, then slightly incurved ; subterminal in- 

 distinct, sinuous, with short pale streaks on veins; a terminal 

 black line, liind wings brownish grey ; faint postfuedial 

 and subierminal lines, the latter pale-edged ; a black termitjal 

 line. Fore wings below fuscous ; a faint postmedial line 

 and dark subterminal shade on costa. Hind wings below 

 whitish irrorated with grey-brown; a black discal spot; a 

 fine postmedial line and subterminal shade; terminal black 

 line partly interrupted. 



Female brighter brown, the lines fuscous, a darker medial 

 shade ; orbicular with a white point ; reniform consisting of 

 four or five white spots. 



Expanse, c? 23-1^7, ? 25 ram. 



Hab. Poas, Turrialba. 



j\Iasiij:is turrialhensis, sp. n. 



$ . Palpi buff thickly irrorated with dark dull brown. 

 Head dark dull brown. Collar and thorax biifF-brown, irro- 

 rated with dark brown and black. Abdomen dull brown. 

 Fore wings dull brown irrorated with dark brown, the lines 

 black-brown, fine; a coarse line at base; anteniedial line 

 outbent to orbicular, incurved below cell, outbent on inner 

 margin, preceded by a pale shade irrorated with ochreous ; 

 orbicular dark-edged, containing ochreous scales; reniform 

 black-biown, crossed by a whitish and ochreous line; post- 

 medial slightly inbent, lunular below vein 3 ; subterminal 

 pale, indistinct, inset opposite cell, outwardly shaded with 

 black, chiefly between veins 7 and 6, 4 and 3, and 2 and sub- 

 median; terminal semilunar black spots. Hind wings dull 

 brownish grey, the costa whitish; a faint discal spot and 

 postmedial line; a terminal dark line. Fore wings below 

 greyish, shaded with buff on costa ; a fine postmedial line on 

 costal margin and large subterminal fuscous shade. Hind 

 wings below greyish while, darkly irrorated; a dark discal 

 spot ; a dentate postmedial line; a subterminal shade, crossed 

 b}' a thick fuscous line on fold. 



Expanse 32 mm. 



Hab. Turrialba. 



