397 Mr. A. G. Butler on the Genus Acronycta. 



that Hadena externa of Walker (which I formerly placed in 

 Tricena) is probably a very worn and stained specimen of 

 BryopMla muralis, Forst. ; its neuration certainly corre- 

 sponds closely with that of Bryophila, and such markings as 

 can be traced are also found in B. muralis. I have failed to 

 recognize Acronycta declarata, Walk., A. telum, interrupta, 

 and pachycephala, Guen. ; though the description of A. inter- 

 rupta is rather suggestive of A. vinnula, Grote, the absence 

 of the illustration upon which M. Guenee based it from the 

 Museum collection of drawings prevents its being satisfactorily 

 identified. Possibly A. telum and pachycephala may be 

 known to our American friends ; but we possess no specimens 

 so labelled. 



Grote's group Merolonche seems to me to be far more 

 distinct than the other sections of Acronycta and may perhaps 

 prove to have generic value, the thicker antennae of the males 

 and the well-developed lateral anal tufts, combined with the 

 regular fasciated character of the markings, should, I think, 

 have some significance. A. lithospila^ Grote, appears to me 

 to be closely allied to the European Scotochrosta pulla, and 

 cannot, I think, be an Acronycta ; nor can I believe that 

 A. lanceolaria and insolita, Grote, should be widely separated 

 from the latter or from Cucullia. I therefore admit Eulonche, 

 for these two species, as a genus. 



One or two of the American species which have been 

 wrongly identified I shall be obliged to rename. 



ACEONYCTA (Acronicta, sic, Ochs.). 

 Typical Section. 



1. A. leporina, Linn., and var. Iradyporina, Treit. 

 Europe. 



*2. A. felina, Grote. United States. 



3. A. lepusculina, Guen., and var. populiy Riley. 

 Hudson's B$y &c. 



*4. A. instia, Walk. United States and Canada. 



*5. A. innotata, Guen. New York, Hudson's Bay, 

 Canada, &c. 



Of the above we possess the types of 2, 4, and 5. To save 

 trouble I shall indicate all species of which we possess the 

 type specimens by an asterisk. 



