254 BULLiETIN 123, UNITED STATES NATIONAL, MUSEUM. 



9 not closely approximate to 8; 11 from middle of cell; upper in- 

 ternal vein of cell from between 10 and 11; 3, 4, and 5 not closely 

 approximate at termen; 2 straight or very nearly so; no costal fold 

 in male. 



Hind wing with 8 veins ; 6 and 7 approximate toward base ; 3 and 

 4 stalked. 



Male genitalia with harpes divided and often assymetrical, costa 

 free nearly to base ; cucuUus and sacculus not differentiated. Uncus 

 developed ; triangular ; long ; strong ; bifid. Socii and gnathos absent. 

 Aedoeagus decidedly curved; long; stout; cornuti a longitudinal 

 series of short, heavy, curved, thornlike spines. Eighth abdominal 

 segment distinctly modified. 



In addition to its peculiar genitalia which are like those of no 

 other genus in the Olethreutidae, Hystricophora has a wing character 

 that will also serve to identify it. The termen is decidedly concave 

 and veins 3, 4, and 5 are not approximate at termen (fig. 12). In 

 other genera whenever the termen is appreciably concave, these 

 veins are always approximate at termen. 



The genitalia are very heavy and so constructed that it is difficult 

 to secure good mounts without dissecting the parts. For this reason 

 it is nearly impossible to take a satisfactory photograph from slides. 



KEY TO THE SPECIES OF HYSTRICOPHORA. 



H. ostentatrix, new species, described in the appendix is not included in this key. 



1. Fore and hind wings both white (11) vestaliana. 



Fore and liind wings not both white; if fore wing white, hind wing darli 



brown 2 



2. Fore wing white, whitish gray, or whitish ochreous 3 



Fore wing ochreous brown or dull golden ochreous 6 



3. Fore wing with a narrow evenly concave black line within termen. 



(10) kokana. 

 Fore wing without such ; if with black terminal line, latter sinuate, follow- 

 ing terminal margin, not evenly concave 4 



4. Ground color of fore wing sordid whitish ochreous (6) roessleri. 



Ground color of fore wing white or whitish gray 5 



5. Fore wing grayish white blotched on dorsal half with brownish; cilia of 



hind wing with a dark basal band (7) asphodelana. 



Fore wing nearly pure white; cilia of hind wing without dark basal band. 



(8) var. seraphicana. 



6. Outer half of costa and terminal area of fore wing strongly marked and 



shaded with orange yellow (9) ochreicostana. 



Outer half of costa and terminal area not so marked 7 



•7, Ground color of fore wing ochreous brown, more brown than yellow, nowise 



golden 8 



Ground color of fore wing more golden than brown 9 



8. Fore wing without ocelloid markings above tornus (4) stygiana. 



Fore wing with two or three short fine black dashes above tornus. 



(5) var. calif omiae. 



