624 Mr. W. Scliaus on 



4 and 3, and between 3 and 2, outbent below 2 to tornus ; 

 a terminal brownish shade from above vein 3 to vein 7. 

 Hind wings roseate lilacine ; the inner margin shaded with 

 brownish hairs ; a faint dark shade on discocellular ; a dark 

 postmedial line, and a subterminal fuscous shade. Hind 

 wings below with a straight dark postmedial line from apex 

 to inner margin, followed by a dentate fuscous shade ; the 

 termen from vein 3 to vein 6 reddish. 



Expanse 41 mm. 



Hah. Sixola. 



Ilylesia umhrata, sp. n. 



S . Head, collar^ and thorax dark lilacine brown, the 

 thorax streaked with ochreous hairs ; abdomen ochreous 

 brown. Fore wings dull lilacine ; the base darker limited 

 by a brownish line angled on subcostal, and faintly incurved 

 below cell ; a large dark shade at end of cell ; the postmedial 

 brownish shade broad, outcurved on costa, followed by a pale 

 lilacine shade on costa, and throughout by a lilacine brown 

 shade limited by the irregular subterminal, which is incurved 

 between veins 6 and 4. Hind wings dull lilacine, broadly 

 shaded with brown on inner margin ; the discocellular and 

 veins darkly streaked; a dark postmedial shade and faint 

 subterminal line. 



Expanse 49 mm. 



Hab. Tuis, Sixola. 



This species is nearest II. approximans, Wlk., and shows 

 considerable variation in the intensity of the markings, but 

 can be recognized by the broad postmedial shade. 



Hylesia frigida, sp. n. 



^ . Head, collar, and thorax black-browai ; a few ochreous 

 hairs on thorax ; abdomen black dorsally, with a few 

 scattered ochreous hairs, lateral and anal hairs ochreous. 

 Fore wings lilacine, the veins brownish ; an indistinctly 

 darker basal shade ; a broad dark shade, crossing end of cell 

 and enclosing a fuscous line on discocellular, its inner margin 

 nearly straight, its outer wider and slightly excurved on 

 costa, then inwardly oblique ; a darker subterminal shade, 

 indistinct and irregular. Hind wings lilacine ; the disco- 

 cellular and veins darkly streaked ; a subterminal darker 

 and very indistinct shade. 



Expanse 43 mm. 



IJab. Volcano Turrialba, 5800 ft. 



This species is apparently confined to the higher 

 elevations. 



