Ileterocera Jrom Costa Rica. ' 373 



on costa, dark hiown, sliglitly outcurved, |)aiallel with medial 

 line below vein 4, and followed from vein 4 to costa by a 

 broad fuscous-brown shade ; a fine greenish outer line, 

 followed by a fine reddish-brown line partly punctifonn ; 

 subterminal black spots, largest on costa and between veins 

 4 and 5, faintly connected by a dentate white line; an 

 interrupted terminal black line. Hind wings: black irrora- 

 tions forming fine antemcdial and medial lines; a similar 

 broad postmedial shade, dividing into three fine lines on 

 cor:ta ; outer space tinged with pale green ; the dentate 

 subterminal white line preceded by small black spots; a 

 black terminal line, interrupted at veins; cilia greenish with 

 dark spots. 



Expanse 18 mm. 



Hub. Juan Vinas. 



A male from the Volcano of Turrialba, which I think 

 belongs to this species, has the costal shadings reddisli brown, 

 the cilia reddish brown, and there is a distinct white spot on 

 discocellular of fore wings. 



Expanse 13 mm. 



Eupithecia oUvocostata, sp. n. 



? . Palpi, head, collar, and thorax yellow-brown, probably 

 olive-green when fresh. Abdomen dull greyish brown with 

 paler segmental lines. Wings dull dark brown; a slightly 

 darker terminal line; cilia buff, darker-shaded at veins. 

 Fore wings: costal margin olive-green; a small fuscous 

 spot on discocellular, and pale oblique shade above it ; lines 

 not traceable ; a faint fuscous postmedial shade, a subterminal 

 white spot below vein 2, a larger spot between 3 and 4, and 

 a faint whitish line from vein 5 to costa. Hind wings: 

 costa broadly shaded with whitish to near apex ; a dark 

 streak on discocellular; faint antemedial and medial lines; 

 postmedial broader, heavier marked ; subterminal white spots 

 on interspaces, the largest between veins 3 and 4. Wings 

 below whitish bufF, a faint antemedial line; dark brown 

 streaks on discocellulars ; postmedial line outcurved ; the 

 subterminal whitish spots preceded by a dark shade; the 

 termen faintly dark-shaded. 



Expanse 27 mm. 



JJab. Poas. 



Eupithecia placens, sp. n. 



? . Palpi and frons brown. Vertex, collar, and tliorax 

 greyish. Abdomen brown, with some darker irrorations. 



