March, 1901.] SCHAUS : HeTEROCERA FROM TrOPICAL AMERICA. 45 



PSYCHID.'E. 

 Oiketicus orizavae. 



Primaries smoky gray, almost black on inner margin ; a blackish spot occupying 

 outer half of cell, followed by a white oblique mark, less dentate than in O. kirbyi ; 

 the outer margin semi-transparent. Secondaries smoky gray, the inner margin broadly 

 blackish ; the outer margin from vein 2 to apex semi-transparent. Expanse, 39 mm. 



Habitat : Orizava, Mexico. 



Chalia vigasi. 



Wings gray, semi-transparent, thinly scaled with darker hairs. Costal margin of 

 primaries finely black, fringe darker gray. Expanse, 16 mm. 



Habitat: Las Vigas, Mexico. 

 Chalia tristis. 



Wings grayish brown, thickly scaled. Primaries 4 and 5 from a point, 7 from 

 near upper angle of cell, 8 and 9 on short stalk from upper angle. lb angled, an- 

 ostomosing with Ic, to outer margin. Secondaries : veins 4 and 5 close together, S 

 far diverging from 7. Expanse, 17 mm. 



Habitat : Jalapa, Mexico. 



COSSID^.. 

 Duomitus pyracmonides. 



Head and collar brown. Thorax grayish white. Abdomen brown, whitish 

 subdorsally. Primaries white with transverse dark brown strise ; basal third of costa 

 dark brown ; from below cell from before vein 2 an irregular broad brown shade to 

 outer margin below apex. Secondaries gray on inner margin, otherwise whitish 

 thickly in-orated with grayish striae, especially in median space. Fringe white. Ex- 

 panse, 54 mm. 



Habitat : Orizaba, Mexico. Can be easily distinguished from 

 pyrac7non Cramer by the absence of the terminal dark spots. 



Duomitus mathani. 



$ palpi, frons, thorax, and abdomen below brownish black, legs black ; tarsi 

 circled with white. Vertex yellowish. Collar black. Thorax white with a central 

 dark brown line. Abdomen dorsally white, with a subdorsal black streak on last five 

 segments ; laterally blackish. Primaries white, markings dark brown ; a large spot at 

 base of inner margin ; a broad space from near base of costal margin extending to one 

 third from base ; a small dark spot on costal margin at two thirds, preceded by four 

 small spots and followed by three a little larger ; from below cells before vein 2 to 

 outer margin at vein 7, an irregular broad band, nearly straight to along vein 5 then 

 ascending obliquely to vein 7 ; a row of small spots along inner margin and above 

 vein lb ; a few spots beyond cell ; terminal blackish spots at veins partly extending on 

 to white fringe. Secondaries white ; the inner margin broadly shaded with brown ; a 

 median broad brown shade, posteriorly curved between the veins, and terminating to- 

 wards costa in diffuse striae ; terminal dark points as on primaries. 



