148 ENTOMOLOGICAL NEWS. [June, 



Group Americana. 



1. All the maculation distinct; ordinary spots well defined; median lines 



geminate, t. a. scalloped, t. p. denticulate; secondaries yellowish in 



both sexes rubricoma. 



Maculation more or less incomplete; median lines never both geminate, 

 t. a. line not scalloped and t. p. line not so strongly denticulate; 

 secondaries various 2. 



2. No longitudinal basal dash, line or streak 3. 



A longitudinal black basal line, not divided at tip and not joined to 



the t. a. line, which is absent or marked on costa only . . 4. 



Basal dash very short, not reaching to the t. a. line, which is often in- 

 dicated on the submedian interspace by an angulated mark . 7. 



Basal dash or streak extending to the t. a. line, or to the angulated 

 mark indicating it ......... 8. 



3. Secondaries smoky in both sexes; median lines and ordinary spots 



fairly well marked; t. p. line geminate; size very large, americana. 



Secondaries yellowish white in male, smoky yellow in female; prima- 

 ries with an ochreous tinge, best marked in male; dagger mark 

 opposite anal angle sharply defined and crossing the t. p. line. 



kastulifera. 



Secondaries grayish white in male, smoky gray in female; primaries 

 bluish ash-gray; dagger mark opposite anal angle is but vaguely 

 indicated and does not cross the t. p. line . . hesperida n. sp. 



Secondaries white in male, smoky gray in female; primaries ash-gray; 

 dagger mark opposite anal angle well marked and usually crosses 

 t. p. line dactylina. 



4. Primaries dark blue-gray, densely black powdered . . 5. 

 Primaries paler ashy gray, black powdering more sparse . 6. 



5. Ordinary spots on median lines usually wanting; veins slightly darker, 



giving a somewhat strigate appearance; t. p. line sometimes well 

 denned as a narrow pale band ...... ielina. 



Ordinary spots always discernible, sometimes well marked; t. p. line 

 well defined and even ... . frigida n. sp. 



6. Darker, the black powderings evenly distributed, veins somewhat 



smoky, giving a strigate appearance; t. p. line continuous, without 

 blotchy marking . . pacifica n. sp. 



More whitish, the black powderings irregularly massed, veins not so 

 marked as to give a strigate appearance; t. p. line broken, with 

 blotchy black markings .... . insita. 



7. Chalky white, black powderings very fine; ordinary spots well marked; 



t. a. line marked on costa, internal margin and in submedian inter- 

 space; t. p. line interrupted and blotchy; dagger mark prominent 

 and crosses t. p. line opposite anal angle . . . cretata n. sp. 

 White with a faint creamy tinge; markings as before, but less promi- 

 nent; powderings much less evident . . . lepocina. 



* vulpina Grt. 



