48 AMERICAN LEPIDOPTERA. 



Forewings, male, yellowish-brown, more or less suffused with purplish- 

 fuscous, especially along the costa and on the outer portion of the 

 wing, an outwardly bowed transverse shade of the same indicated at 

 one-third from the base ; at the end of the cell is a reduplicated fus- 

 cous spot ; cilia pale yellowish-brown ; female, with the fuscous shad- 

 ing having a purplish tinge, and being very much thicker and more 

 generally distributed than in the male (in some male specimens the 

 suffusion is almost entirely absent) , the basal third of the wing and a 

 patch at the lower extremity of the cell alone exhibiting the paler 

 groundcolor. Hindwings pale brownish-gray ; cilia yellowish-brown. 

 Abdomen and legs pale brownish-ochreous. Alar expanse 16-18 mm." 



Hab. — Colorado, Loveland, 5000 feet, July and Sept., 1891 ; 

 Denver. 



The above is Lord Walsingham's description. Cotypes in 

 the Nat. Mus. Coll. have been examined by the writer. This 

 is the type of Catacrypsis Wish. The palpi are equal in both 

 sexes. Hindwings as wide as the forewings, costal margin 

 nearly straight, depressed towards the apex, the latter rather 

 obtuse. Veins 3 + 4 of hindwing long stemmed, 5 from 

 about the middle of the stem. 



The peculiar ochreous-brown color distinguishes this species 

 from any other of our North American forms except borea- 

 sella, from which it is distinguished by its smaller size and 

 the absence of longitudinal lines and the patch of whitish 

 scales in the basal space. From H. nana it differs at once 

 by its much larger size. 



24. H. nana n. sp. (Plate III, fig. 24.)— Head, basal joint of 

 antennas, thorax, and palpi pale ochreous- white, the latter long and 

 slender, extending considerably above the front, terminal joint slender, 

 nearly as long as the preceding, dusted externally, especially the termi- 

 nal joint, with fuscous. Antennal shaft grayish, dusted with fus- 

 cous. Forewings rather narrow, costal margin slightly retuse about 

 the middle third, pale ochreous, suffused in patches with fuscous hav- 

 ing a faint purple lustre, as follows: a large, ill-defined oval patch in 

 basal fifth, a triangular patch on both the costal and dorsal margins at 

 one-fifth, curved outwardly and forming an ill-defined angulated fascia, 

 on the inner margin of the costal spot, and above the middle is a well 

 marked blackish spot, two similar spots at end of cell, a patch just 

 beyond the middle of the costa and one at about four-fifths, a patch on 

 the dorsal margin, just beyond the end of cell , a series of dashes along 

 the base of the cilia, apical portion of wing more or less densely dusted 

 with pale fuscous ; a dark purple-brown spot at base of costa, extreme 



