Ileterocera from Costa Rica. 2G9 



between veins 2 and 3 ; an indistinct subterminal line, 

 punctiforra on veins ; cilia wliitisli buffi and brown. Hind 

 wings white, the veins and margin irrorated with fuscous 

 hairs ; a fuscous streak near inner margin. 



Expanse ol mm. 



Huh. Sixola, Juan Vinas. 



Allied to D. stridula, Schs,, and D. dispardis, Sclis. 



Dicentria rivalis, sp. n. 



^ . Palpi buff, a t'uscous-brown patch laterally. Head and 

 thorax mottled brown and fuscous. Abdomen above fuscous, 

 the terminal segments buff and brown. Fore wings buff- 

 brown, shaded with pale reddish brown on inner margin; a 

 dark brown space at base of costa and cell ; a pale line on 

 either side of discocellular, preceded in cell by a dark shade 

 and followed by a dark brown streak from between 4 and 5 

 obliquely across vein 5; antemedial line faintly indicated; 

 small postmedial geminate streaks on veins ; subterminal 

 fuscous spots above vein fi ; a dark brown space on outer 

 margin from vein 2 to above vein 3 ; veins terminally 

 fuscous ; terminal brown spots between veins ; fuscous spots 

 on cilia at veins. Hind wings white, some terminal biown 

 scales ; a fuscous shade at anal angle. 



Expanse 35 mm. 



$ . Fore wings greyer; the lines and spots more distinct ; 

 the f^pot on discocellular oval, whitish grey, with dark centre ; 

 a geminate dark wavy line before cell-spot ; a curveddentate 

 fuscous line just beyond cell ; the postmedial very oblique on 

 costa and finely dentate, geminate ; the sul)terminal spots 

 larger. Hind wings : the veins terminally and outer margin 

 fuscous. 



Expanse 44 mm. 



Nab. Juan Vinas, Guapiles. 



Allied to D. pahnita, Schs. 



Dicentria rustica, sp. n. 



(J. Head and thorax mottled grey-brown and fuscous; 

 frons shaded with buff. Abdomen above black ; a buff 

 space dorsally on last two segments; underneath whitish 

 buff ; a black ventral space at base ; the legs fringed with 

 long black hairs. Fore wings dull brown, irrorated with 

 fuscous brown, especially at base, on inner margin, and above 

 tornus ; a fuscous shade at end of cell ; antemedial very 

 indistinct, fuscous; tine fuscous streaks between veins beyond 

 cell ; postmedial black points on veins ; veins dark brown ; 



