53 



17. comstocki Grt. Canada southwardly. 



Gen. Diphthera Hbn. 1806. 



Type: D. orion (= aprilina + Hbn.). 



18. fallax H.-S. Canada to Texas. 



Gen. Arsilonche Led. 1857. 

 Type: A. alboveuosa. 

 = Ablepharon Grt. 



19. henrici Grt. 



1873. 

 Canada to California. 



albovenosa J^ Morr. 



var. evanidum Grt. 

 aberr. fumosum Morr. 

 an spec. europ.? 



Gen. Merolonche Grt. 

 Type: M. spinea. 



1882. 



*) I have shown that Apatela Hb. Tent. 1806, is the oldest generic 

 title for any member of the present group, Buffalo Check List, 36, 1876. 

 I also show that the terra Acronicta must be credited to Ochsenheimer 4, 

 62, 1816, and that it is restricted by Hübner, Verz., 1816 (1818) to two 

 European species of which 1 selected leporina as type, List Noct. N. Am. 

 Bull. Buffalo Soc. 7, 1874. In various papers on the North American Dagger 

 Moths (consult in particular Can. Ent. XVII, lJ4j I have piven the various 

 generic titles, with their types, to be employed in a breaking up of the group, 

 for which the coUective term Apatela must be used. There reraains to be 

 studied the application of generic titles recently proposed by Dr. Chapman 

 in England. 



