Ihterocera from Costa Rica. 309 



anci below vein 5 ; tlie cell, the inner margin broadly, and 

 a sliiuie from cell to apex irrorated vvitli tuscous ; a fine 

 medial white line outangled on discocellular ; traces of a 

 similar antemedial line. Hind wings : a geminate medial 

 paler shade, and luscous post medial shade, all ill defined. 

 Wings below brownish grey ; the postmedial and subtcrminal 

 fuscous shades well defined, the latter followed by a dentate 

 whitish line on tore wings, and by a wavy shade on hind 

 wings with branches towards postmedial; fine lines on 

 discocellular, and traces of antemedial lines. 



Ex|)anse 22 mm. 



Hub. Juan Vinas. 



Eupithecia contexta, sp. n. 



$ . Body fuscous mottled with grey. Fore wings fuscous 

 brown crossed by whitish-grey lines, outcurved and sinuous ; 

 a subbasal line; the antemedial and medial fascia broad, 

 divided by a fuscous line ; the space following crossed by a 

 whitish line and limited by the white postmedial which is 

 also divided by a fuscous line ; asubterminal lunular dentate 

 white Ime ; cilia whitish grey with dark spots; the sub- 

 costal vein to just beyond postmedial light brown ; the end 

 of median and veins 3 and 4 partly light brown ; vein 6 

 light brown between ))ostmedial and sublerminal ; a daik 

 line on discocellular. Some S])ecimens are greyer and the 

 shade following antemedial is velvety black. Hind wings 

 dark brownish grey ; traces of two antemedial and a medial 

 line ; median, vein 2, and inner margin irrorated with fuscous 

 brown, the inner margin with white lines also. Wings 

 below brownish grey. Fore wings : four outcurved daiker 

 lines beyond middle and a sublerminal shade broadest on 

 costa. Hind wings: two antemedial, a medial, and post- 

 medial line; outer margin darker-shaded, with small whitish 

 sublerminal spots on .interspaces; dark points on veiirs on 

 either side of j)Ostmedial line. This species has a dis- 

 tinguishing feature in the light brown subcostal, and similar 

 shade on vein 6. The only species approaching it is 

 JH. vipereaj fSchs. 



Expanse '2.'2, mm. 



Hab. Juan Vinas, Poas. 



Eupithecia derogata, sp. n. 



(J. Antennae pectinated. Palpi and head buff. Thorax 

 and abdomen dark grey, irrorated with fuscous ; darker 

 segmental lines ; some light brown shading on patagia. 



