410 ON SPECIES OF HADENA SMITH. 



In synoptic form the groups may be distinguished by the following 

 table : 



No W-mark in the 8. t. Hue. 



S. t. space -with a triangular flark shade at middle and another at hind angle, 

 crossing s. t. line at those points; transverse lines incomplete or i)uncti- 

 forni Group vultuosa. 



S. t. space concolorous ; s. t. line obsolete or indefinite, median lines distinct. 



Group FINITIMA. 



Transverse maculation all obsolete, reniform more or less distinctly white marked. 



Group SPUTATRIX. 



Transverse maculation all evident. 



S. t. space not paler; terminal space concolorous or paler, never darker; s. t. 

 line preceded by a series of sagittate black spots which are sometimes con- 

 fluent Group DEVASTATIUX. 



As before ; s. t. line distinct, no preceding dark shade or spots Group alticola. 



S. t. space paler than median or terminal space, the latter darkest; s. t. line 

 sometimes preceded by darker shades, never by sagittate spots; primaries 

 wider with more produced apices Group arctica. 



Evenly colored ; a distinct black longitudinal shade from base to t. p. line. 



Group PEUPENSA. 



A distinct W-mark in s. t. line on veins three and four. 



Secondaries white or dusky Group cariosa. 



Secondaries yellow with black margin Group INORDINATA. 



GENUS LUPERINA Bdv. 

 Liiperina niveivenosa Grt. 

 1879, Grt., Bull. Geol. Surv., v, 206. Agrotis. 



Dull fiisco-luteous, all the veins white marked. A black basal dash; 

 another aloug hind margin. Basal half line obsolete. T. a. line marked 

 only in submedian interspace, where it interrupts a broad black shade, 

 which extends through the lower portion of this space to t. p. line ; 

 surmounting this dark shade is a clearer luteous shade. Orbicular 

 narrow, oblique, pale; black-ringed. Eeniform upright, outwardly 

 indeuted, variable in size, black-riuged, with an interior pale aunulus 

 and concolorous center. A darker shade through the cell between the 

 spots, and beyond the reniform the space is blackish to the t. p. line. 

 This line is marked by a paler yellow shade, which is inwardly sharply 

 defined, and outwardly merges into the ground color. S. t. line pale 

 yellow, lunulate, interrupted forming an indefinite W, preceded by 

 black, more or less sagittate spots, followed by smaller, less definite 

 spots. Fringes usually paler at base. Secondaries pale fuscous, with 

 paler fringes. Beneath, even pale fuscous, with a pearly Inster. 

 Head and thorax concolorous with the pale ground-color of primaries. 



Expands 36 millimetres=1.45 inches. 



Habitat : Montana, Colorado. 



No $ has been seen ; four 9 9 — one of them, the type, has been 

 under examination. The strongly white marked veins of primaries 

 and the narrow oblique orbicular are distinctive. Mr. Grote evidently 

 referred this species to Agrotis solely upon superficial appearance. 



