10 JOHN B. SMITH. 



Winnipeg is the darker of the two and a little smaller. There 

 are no contrasts in maculation and the orbicular is scarcely paler 

 than the rest of the wing. The genitalia of the male are charac- 

 teristic and tend to combine features of both the oregonensis and the 

 (intennata type. The harpe is large, curved and convex, the upper 

 angle of the emarginate tip produced, the upper margin with a 

 rounded protuberance, the edge of which is dentate. The clasper is 

 a very long curved hook of moderate thickness. 



Unimoda is larger and paler gray, the orbicular better defined 

 and distinctly more whitish than the rest of the wing, so that it is, 

 obviously, the most conspicuous feature of a very inconspicuously 

 marked form. The male harpes are altogether different from any 

 others, the tip being acutely notched, the margins even, though not 

 parallel. The clasper is a very long, curved and twisted hook. 



In all the remaining species the black basal dash extends only to 

 the basal half line, usually making a junction with it so as to in- 

 close a paler patch on the costal portion of the base. This feature 

 is variably distinct, of course, but traceable in even the most ob- 

 scurely marked grotei that I have seen. 



Some of the species have the median lines connected by a black 

 longitudinal line, either crossing the entire median space or extend- 

 ing from the claviform to the t. p. line. Most of the species have 

 no connection of this kind and these will be first considered. 



Laticinerea and grotei agree in dull, ashen gray color ; primaries 

 with the space between the ordinary spots not at all darker, and the 

 reniform without a trace of reddish or brown shade or flu.sh. 



Laticinerea is the larger and darker of the two, the fore wing 

 having a peculiar rough ai)pearance as from uplifted black scales. 

 Out of this the orbicular is relieved by whitish powderings, and the 

 s. t. line is marked by contiguous, black, sagittate preceding spots. 

 In the male the harpes are larger and convex, narrowing rather 

 regularly to an obliquely excavated tip, the upper angle of which is 

 long drawn out. The lateral margins are even, but there is a trian- 

 gular flat process arising toward the middle, which is rough and 

 irregularly set with smaller hair. The clasi)er is a long, slender, 

 curved and somewhat twisted hook. 



Grotei is smaller and of a more even gray throughout. The ves- 

 titure is comparatively smooth, and the orbicular does not stand out 

 in contrast to the ground, though it may be as pale as in the preced- 

 ing species. The dusky shade before the s. t. line is rarely contrast- 



