214 INSECUTOR INSCITI^ MENSTRUUS 



Striae; cilia silky mouse gray. Hind wings silky mouse gray. 

 Wings below silky mouse gray, the fore wing with three white 

 costal spots on outer half, and some marginal white spots 

 from apex to vein 4. 



Expanse, 35 mm. 



Habitat. — Volcan Santa Maria, Guatemala. 



Type.— Cat No. 25637, U. S. Nat. Mus. 



Hydriomena ciniana, new species. 



Male. — Palpi deep mouse gray. Head and collar whitish the 

 latter shaded with olive buff. Thorax whitish with some gray 

 scaling. Abdomen whitish buff with some grayish irrorations, 

 the dorsal tuft at base metallic black. Fore wings with a few 

 black irrorations on a whitish or yellow green ground ; a black 

 space at base; subbasal, antemedial, and medial fuscous lines 

 from narrow costal spots, outangled in cell and obliquely 

 sinuous to inner margin, sometimes the lines are suffused 

 together by dark shading but always retain their general out- 

 line ; postmedial line finely lunular, oblique from costa, in- 

 curved below vein 5 to lower angle of cell, then outcurved, 

 usually obsolete ; a broader subterminal fuscous shade with 

 irregular edges, becoming narrow below vein 5, lunular and 

 parallel with termen ; a small dark apical spot ; a dark terminal 

 line expanding into small spots. Hind wings drab showing the 

 discal spot and postmedial line of underside ; a fine darker 

 terminal shade with spots on pale cilia. Fore wings below 

 whitish gray suffused with brownish drab ; a fine dark line on 

 discocellular ; an outcurved postmedial line and broader, less 

 distinct, subterminal shade. Hind wings below white irrorated 

 with mouse gray ; the postmedial line sharply curved below 

 vein 4 ; a faint subterminal line. 



The female frequently has the postmedial space white. 



Expanse, male, 25 mm. ; female, 30 mm. 



Habitat. — Purulha, Guatemala. 



Type.— Cat. No. 25638, U. S. Nat. Mus. 



Described from 14 males and 15 females. 



