NORTH AMERICAN RrXTERFI.IES. 115 



279. EREBIA MAGDALENA Str. 

 Magdaleen's Butterfly. 

 Size large. Dark blackish brown on both surfaces, with a purplish 

 tinging above, Avithout spots or markings. Expands 2.00. Habitat, 

 mountains of Colorado. Occurs in June and July. 



GENUS XLl. 

 GEIROCHEILUS. MOUNTAIN WOOD BUTTERFLIES. 

 Size, medium. Colors, dark brown dotted with white 

 and marked with reddish. Both wings rounded, hind pair 

 scalloped on outer margin. Veins of fore wings, swollen 

 at base. Antennae, not as long as body, club enlargmg 

 gradually. Type, G. tritonia. (Plate VIII, 5.) 



280. GEIROCHEILUS TRITONIA Edw. 

 Triton Butterfly. 

 Brown above, lighter on outer border of fore wing and at base of both 

 pairs. Outer margin of hind wings yellowish red, and tliere is a sub- 

 marginal band of dusky on both wings. On outer portion of fore wings 

 are four spots of white, and three on hind pair. Beneath, similar, white 

 spots larger, and the reddish margin of hind wing is tinged with bluish- 

 Expands 2.00 to 2.30. Habitat, Southern Arizona. 



GENUS XLII. IlIPPARCllIA. GRAY-WINGS. 

 Size, medium. Colors, dull, usually grayish, frequent- 

 ly with small eye spots on one or both surfaces. Anten- 

 nae, short, w ith the club enlarging gradually. Fore wings, 

 triangular, and pointed at apex, with veins somewhat swol- 

 len at base, hind pair, oval. Type, H ridinosii. (Plate^ 

 VIII, G.) 



281. HIPPARCHIA RIDINGSH Edw. 



Ridings' Butterfly. 



Size, small. Ashy brown above, with a band of elongated yellowish 



spots crossing both wings, interrupted in middle of fore wings. On the 



fore wings are two small, oval spots, white-pupiled, Plate VIII. Hind 



wings without spots. Beneath, a little paler, nnich lined with brownish. 



