Iltterocera from Costa Rica. 631 



Givira tigrata, sp. n. 



Palpi reddish brown ; frons bufF-brown ; vertex and collar 

 in front reddish brown ; collar behind and thorax whitisli 

 buff, with transverse reddish-brown shades ; abdomen light 

 reddish brown, with transverse whitish-bufF lines. Fore 

 wings ochreous, crossed by reddish-brown spots and short 

 thick lines partly edg-ed with pale golden scales ; some small 

 basal spots followed Isy larger coalescing spots, darker below 

 cell ; three antemedial small spots, on costa, in cell, and 

 below cell, and geminate spots above and below 1 5 ; a large 

 medial darker si)0t across costa and end of cell, and a similar 

 spot from below end of cell to inner margin, the two some- 

 times coalescing ajid forming a broad band ; a broad post- 

 medial line from 7-2, followed by short lines, and a broken 

 subterminal ; broad terminal streaks on outer margin down 

 bent and outAvardly oblique. Ilind wings ochicous, with 

 indistinct darker transverse striae. 



Expanse 30 mm. 



Hah. Juan Vinas, Tuis. 



Lentagena ttistani, sp. n. 



Head and thorax grey, streaked with brownish hairs; a 

 darker brown-grey shade posteriorly on thorax ; abdomen 

 grey, banded with fuscous. Fore wings whitish, sliaded with 

 grey postmedially, and reticulated with fine darker grey 

 lines ; the costal margin, base of cell, inner margin, and apex 

 shaded with brown ; a fine brown streak on discocellular ; a 

 broad dark brown streak medially above submedian ; reti- 

 culations on outer margin more heavily marked, dark brown ; 

 dark brown shades on cilia at end of veins. Hind wings 

 semihyaline whitish grey ; the margins, veins, and some striae 

 brown. 



Expanse 39 mm. 



Uab. Juan Vinas, Tuis, Sixola. 



Named after Prof. Tristan, of San Jose, who has assisted 

 greatly in a knowledge of the fauna of Costa E,ica. 



Trigena crassa, sp. n. 



^ . Body mottled dark steel-grey and brown, the abdomen 

 somewhat irrorated with white. Fore wings dark steel-grey, 

 irrorated with light brown ; a fine subbasal black line ; a 

 heavier marked antemedial line, bifurcating in cell, the inner 

 line inbent towards- inner margin ; a fine postmedial line and 

 a more distinctly marked subterminal line, thickening in 

 places and emitting curved lines to terraen ; some whitish 



