61 



CKAMBUS DIMIDIATELLUS. (Plate IV., fig. 13.) 



Crambus dimidiatellus Grote, Ann. Mag. Nat. Hist., Series V., Vol. II., 

 p. 57 (1883). 



Expanse of wings, 35 mm. Palpi ochreous, sprinkled 

 with fuscous atoms ; head and thorax pale ochreous. Fore 

 wings with a costal band reaching to the middle of the cell, 

 and curving up toward the apex, ashy brown, inclining to 

 olivaceous. A white stripe extends from the base two-thirds 

 the length of the wing, where it breaks up more or less into 

 venular lines reaching to the outer margin. Hind margin 

 broadly shaded with very pale ashy brown. A marginal row 

 of black points, scarcely visible. Fringes pale ash colored. 

 Hind wings pale silky fuscous ; fringes lighter. 



Habitat. Colorado and New Mexico. Food plant and 

 early stages unknown. 



CRAMBUS CALIGINOSELLUS. (Plate IV., figs. 2, 3.) 



Crambus caliginosellus Clem., Pr. Ph. Ac. Sci., p. 204 (1860). 

 Crambus caliginosellus Felt, Grass-eating Ins., pp. 61, 83 (1894). 



Expanse of wings, 13-25. Head, palpi and thorax dark 

 fuscous, sprinkled with gray scales. Fore wings dark fus- 

 cous, sprinkled with brown or yellowish, and frequently 

 with a few gray scales ; median line dark brown, often edged 

 with white, arising a little beyond the middle of the costa, 

 extending outward, forming a very acute angle, thence back- 

 ward across the end of the cell to the hind margin, a little 

 beyond the middle, and giving off an outward angle on the 

 fold. Subterminal line dark brown, edged outwardly with 

 dark lead-colored scales, and frequently dentate along the 

 first part of its course. It arises from the costa about half 

 way between the median line and the apex, extending down 

 to a point beyond the end of the cell, where it forms an out- 

 ward angle, thence to the hind margin, a little within the 

 anal angle, giving off an inward angle on the fold. This 

 angle is frequently connected along the fold with the outward 

 angle of the median line ; terminal line dark brown, rather 

 indistinct. The lines are often obliterated more or less, 

 especially the median. Fringes dark leaden gray. Hind 

 wings dark fuscous ; fringes a little lighter. 



