CHIONOBAS. 71 



their pale, dull, livid, and, as it were, diseased color, indicating 

 their far northern habitat. 



1. C. also Boisd. et Lee., p. 222. Figured in Boisd. Icones, pi. 40. 



Wings of a dirty grayish tint, mixed with yellow, slightly trans- 

 parent with some small brownish atoms, a little more dense near 

 the fringe. The primaries have a little more uniform color, deeper 

 at the base, with an oblique shadow on the median nerve. The 

 secondaries are sufficiently transparent to observe the markings on 

 the opposite side. 



The under side of the primaries is more deeply powdered with 

 brownish than the upper, with the upper edge and summit varie- 

 gated with grayish and blackish. 



The under side of the secondaries is brownish to the middle, 

 with some grayish atoms, and marbled with the same color near 

 the external edge. The posterior portion is grayish violet, with 

 blackish atoms and small undulations. 



The fringe is grayish-white, interrupted with blackish. 



Rocky Mountains of New Hampshire. 



BOISD. 



[Most probably Sat. semidea Say. M ] 



2. C. balder Boisd. et Lee., p. 216. Figured in Boisd. Icones, pi. 39. 



Boisd. Iconograph. du Regne Animal, pi. 80. 



Upper side livid yellowish-brown, with the border a little more 

 obscure. Primaries at the extremity have three pale yellow spots, 

 of which two have a central black point. Secondaries, near the 

 extremity, have a row of four or five pale yellow spots, cuneiform ; 

 the one nearest the anal angle usually has a black point. 



"Under side of primaries is more yellow than the upper, with the 

 costal edge, apical point, and a part of the extremity, pale ash, 

 sprinkled with brown. 



Under side of the secondaries brownish, varied with ash-gray ; 

 a little bluish. It is traversed in the middle by a broad band, 

 dentated, and forming a suite of nearly equal angles. The edge 

 of this band and the extremity of the wing are more gray than the 

 rest. Fringe white and black. Body brown ; antenna? grayish 

 at the base, pale testaceous to the end. 



North Cape Greenland Labrador. 



BOISD. 



