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The Aeronyetas have been so fully written upon by 

 Professor J. B. Smith, and Dr. T. A. Chapman, that it 

 would be presumptious on my part to appear to suggest 

 any criticisms on the work of these specialists in the group. 

 I shall content myself with merely treating them from a 

 genitalia standpoint. 



As a whole the group are closely generic, with the 

 exception of megacephala and ligustri. Ligustri evidently 

 belongs to a separate genus, megacephala is entirely 

 different, and I should be inclined to make a separate 

 genus for it, were it not for the fact that Dr. Chapman 

 considers in other respects it belongs here. We are 

 therefore bound to conclude that it is a strong example 

 of one of those curious sports that will be met with 

 throughout the order Lepidoptera. 



Taking rumicis as the type venosa, leporina and 

 aceris all run closely into it ; note should here be made 

 of the curious little peduncle described by Prof. Smith, 

 on the apex of the harpe, in the American species 

 albovenosa, which does not occur in our British species 

 venosa. 



The next group including myricce, strigosa, auricoma, 

 menyanthidis, alni and psi, have the clasper bifurcate 

 in various forms ; that of tridens as its name suggests 

 being in the form of a trident. 



Acponycta rumieis. 



Harpe rounded; clasper a long arm ; uncus tongue shaped; 

 vesica with large scobinated processes and band of teeth. 



Venosa. From Dr. Chapman. Pencils absent. 



Harpes rounded ; clasper a long arm ; uncus simple ; vesica 

 has a scobinated process. In albovenosa the vesica has, 

 besides a scobinated process, six long bulbed cornuti. 



Leporina. From Dr. Chapman. 



Harpes rounded ; clasper a long arm ; uncus deep and 

 curved, ending in a hook ; vesica with bunch of cornuti. 



