54 INSECUTOR INSCITLt MENSTRUUS 



and two posterior, smeJl, dark brown spots. Forewing dirty white un- 

 evenly suffused with dark brown ; an ill-defined, dark brown streak from 

 base through basal hcJf of the cell ; an ill-defined, outwardly oblique, 

 brown streak from just before the middle of costa crosses the cell and 

 then turns in em abrupt angle outwardly toward apex, ending beyond the 

 cell, at apical third in a sharply outwardly angulated, ill-defined, trans- 

 verse, brown fascia ; around apical and terminal edge is a series of ten 

 small, sharply defined, blackish dots ; cilia white. Hindwing light yel- 

 lowish white, hyaline, with darker fuscous tips ; cilia white. Abdomen 

 dark brovm with whitish fuscous underside and ochreous anal tuft. Legs 

 dirty white with broad, blackish brown annulations. 



Alar expanse, 30 mm. 



Habitat, Juan Vinas, Costa Rica ; W. Schaus, collector. 



Type, Cat. No. 18270, U. S. Nat. Mus. 



Nearest to Ethmia baliostoma Walsingham, but not so broad winged 

 as this species and differing in the transverse, outwardly angulated fascia. 



Ethmia gigantea, new species. 



Labial palpi slender, smooth, bluish black, second joint with a broad, 

 subapical white ring ; terminal joint with two annulations and extreme tip 

 white. Face and head white. Collar black. Thorax white, with front, 

 base of patagia, a large central spot and three posterior dots bluish black. 

 Forewing blackish brown sprinkled v/ith white and with dorsal and api- 

 cal part white ; this v/hite part sends a broad spur up into the black part 

 at basal third and be-ow this spur is a round black dot ; at apical third 

 is another longer, zigzag spur outwardly oblique into the dark part of the 

 wing and beyond this white spur the dark color runs down nearly to 

 dorsal edge ; a series of black marginal spots euround apex to tornus. 

 Cilia white with a black patch below apex. Hindwings semitransparent, 

 light whitish fuscous, darker toward apex ; cilia white. Abdomen dark 

 fuscous above, light fuscous on the underside and with the last joint 

 orange. Legs blackish barred vVith white. 



Alar expanse, 35-40 mm. 



Habitat, Zacualpan, Mexico, August; R. Miiller, collector. 



Type, Cat. No. 1 8265, U. S. Nat. Mus. 



Nearest to Ethmia coronata Walsingham and Ethmia ahdominella 

 Busck, but larger than either, and differing from both of these in the col- 

 oration of the abdomen as well as in the details of the wing pattern. 



