LEPIUOPTERA ITETEROCERA. 61 



Group 6. 

 Like the seventh European group. 



40. ACRONYCTA DECLARATA. 



Nigra ; thorax albo varius ; abdomen cinereum ; alee antica ni- 

 gricantes fasciis quatuor angulosis albis nigro marginatis, 

 annulis duobus albis ; posticce cana, apud marginem exterio- 

 rem nigrum fascesccntes. 



Black. Thorax with some white marks. Abdomen cinereous. 

 Fore wings bhickisli, with four irreguhir zigzag white black- 

 bordered bands, and with two white ringlets, of which the exterior 

 one is much brighter and more conspicuous than the interior one. 

 Hind wings hoary, brown towards the exterior border, which is 

 black. Length of the body <^' lines ; of the wings lt> lines. 



Canada. In Mr. Saunders' collection. 



41. ACRONYCTA IMPRESSA. 



Albida ; thorax nigro conspersus ; alee anticce sat angusicB, punctis 

 nigris conspersce et trimaculatcB ; posticce cinerece, basi albida. 



Whitish. Thorax speckled with black. Fore wings rather 

 narrow, thickly speckled with black ; the specks in some parts con- 

 fluent, and forming three large diffuse black spots. Hind wings 

 cinereous, whitish towards the base. Length of the body 6 lines ; 

 of the wings 14 lines. 



a. St. Martin's Falls, Albany River, Hudson's Bay. Presented by 

 Dr. Barnston. 



42. AcRONYCTA INSITA. 



Cana ; alee guttis marginalibus nigris ; anticce apud costam nigro 

 notatcs, fasciis gullularibus annuHsque duobus discalibus in- 

 completis nigricanlib us, fascia exteriore e lunulis nigris ; pos- 

 ticcE albidcBy gutta fasciaque nigricantibus. 



Hoary. Wings with black dots along the exterior border. 

 Fore wings with blackish marks along the costa, with some imperfect 

 dotted blackish bands, with two incomplete blackish discal ringlets, 

 and with an exterior undulating more complete band composed of 



