Ileterocera from Costa Rica. 377 



preceded by a broad dark sliado and followed by fuscous 

 streaks on veins ; no terminal line; cilia brown mottled witli 

 fuscous brown. Hind wings brown, paler on costa ; basal, 

 antcmedial, and medial linos on inner margin ; postmedial 

 reaching costa ; outer margin broadly darker ; the subter- 

 niinal whitish brown. Wings below paler. Fore wings : a 

 fuscous streak on discocellular ; postmedial fine, followed by 

 a broad fuscous shade, not reaching inner margin ; subter- 

 minal broad, paler. Hind wings : basal and medial lines, 

 the latter crossing a dark spot on discocellular; postmedial 

 broad, fuscous on costa ; a broad subterniinal brown shade ; 

 terminal brown shadiuiis. 



Expanse 19 mm. 



Ilab. Poas. 



EupWiecia tenera, sp. n. 



^ . Body and wings white faintly tinged with olive-grey. 

 Fore wings : basal fourth of costa narrowly fuscous grey ; 

 a similar triangular spot medially on costa, darker-edged, 

 its apex formed by a fuscous-brown spot on discocellular ; 

 a subterniinal clearer white dentate line, preceded by faint 

 dark shades on costa and on interspaces between veins 3 

 and 5 ; a better-marked fuscous point above tornus. Hind 

 wings : a dark discal point ; clearer white autemedial, post- 

 medial, and subterniinal shades, the last preceded by some 

 fine dark shadings. Wings below suffused with dark grey, 

 and with black discal spots. Hind wings : the suffusions 

 forming an angled postmedial white shade. 



Expanse 15 mm. 



Hab. Juan Vinas. 



Eupithecia tremula, sp. n, 



? . Head, collar, and thorax white ; a transverse black 

 line on patagia; thorax sliaded behind with light brown, 

 Abdomen white shaded with grey from beyond base ; black 

 dorsal points. Fore wings whitish, the lines consisting of 

 fuscous irrorations forming spots on costa ; costa shaded with 

 pale brown ; subcostal and veins terminally brownish buff; 

 subbasal line fine, outangled below cell ; three antemedial 

 lines, coarser ; an oblique black streak on discocellular; a 

 fine medial line beyond cell; postmedial outbent to vein 6, 

 then wavily inbent, fuscous, preceded by a broad fuscous 

 grey shade, followed by a tine brown line ; subterniinal 

 wavy, white, preceded and followed by fuscous and brown 

 shadings from vein 8 to vein 4, and near inner margin j 

 Ann. ct- Mag. N. ilist. Ser. 8. Vol. xi. 2(3 



