44 THE CANADIAN ENTOMOLOGIST. 



flight, and many good collections ofNoctuidse are without a representative. 

 This digression is but to emphasize the fact that the writer is familiar with 

 the species, and in all the years up to encountering the Buffalo fauna we 

 will say in pattern, colour and design it has been constancy itself Not 

 the faintest fleck of white has ever appeared in the stigmata for instance, 

 the weak point in Papaipema. 



But the Buffalo Burdocks seem replete with enigmas, and a darkly 

 suffused, white-spotted form appears, which, did not more apparent inter- 

 grades exist to the normal form, would warrant the assumption of further 

 specific departures. From circumstantial superficialities one would 

 declare that the necopina and cataphracta, with which these plants are 

 teeming, had irredeemably mixed, though their very numbers might argue 

 against the need or likelihood of hybridism. Even necopina shows 

 apparent taint in examples deeply pov/dered with the peculiar yellow tint 

 oi cataphrada^ running to forms having a well-defined and white-marked 

 reniform. Whatever the cause, the only facts known are that this peculiar 

 aberration is produced from a larva having the full specific attributes of 

 cataphracta in the last two stages at least. A rather striking feature with 

 this new form is that it begins to emerge in August, whereas the type form 

 rarely begins before Sept. 15, and continues until the middle of October, 

 for New York State at least. A name for this form of cataphi'acta is 

 considered desirable, and the following is proposed : 



Papaipeina flnxa^ new aberration. 



Vestiture of thorax purple-brown mixed with gray. Primary broad, 

 entirely suffused with umber-brown, concealing more or less the yellow 

 under colouring and the usual lines ; ante - and postmedial areas fainly 

 show a purple reflection ; stigmata small and white-marked, or the 

 orbicular and claviform may be lost entirely, or the reniform may show 

 the outer spots yellow ; a powdering of yellow scales over the lower 

 median area, producing a patch at the apex, and a sprinkling is noticeable 

 on the costa. Secondary the smoky-gray of the abdomen. The genitalia 

 agrees with type form. Expanse, 34-38 mm. 



A cotype is with Mr. Moeser and a male type with the author. 



Papaipema arciivorens Hmpsn. 



The life-history of this species has never been fully recorded. It is 

 an Eastern Canadian form, occurring commonly about the City of 

 Montreal. Its larva bores in stems of Arctium lappa, Cirsium la7iceola- 

 tum, C. arvense, Dipsacns syivestris and other thick-stemmed weeds. A 



