58 THE CANADIAN ENTOMOLOGIST. 



said that he did not know it, and thought it must be new. Mr. Scudder 

 said it might be new, but one needed a very full series in that group. I 

 afterwards showed it to Mr. Fletcher, and asked him if he had ever seen 

 that form, and he immediately said " Yes, at Regina." He added that 

 he had sent a specimen to Mr. Eugene Aaron, who had pronounced it 

 to be only Manitoba, but Mr. Fletcher expressed to me the opinion that 

 it was at least a very distinct variety. The point in which this form 

 chiefly differs from Manitoba of the Lower St. Lawrence is that those 

 parts on the underside, which are brown in the latter, are of a very 

 pale greenish-yellow or yellowish-green in the Regina form, but it also 

 differs somewhat above in that the males are usually of a yellower tone 

 while the brown of the female is decidedly darker and the spots of the 

 forewing decidedly lighter, some of them being almost white, than in the 

 Eastern specimens. 



Wishing to get further light upon the probable relationship of these 

 forms this year, I took a number of specimens of each with me on a trip 

 to Boston and New York before returning home from a short holiday on 

 the Atlantic Coast, and through the kindness of Mr. Scudder was 

 enabled to examine his original types of Manitoba. One of these 

 agreed exactly with my specimens from the Lower St. Lawrence, while 

 the ones from British Columbia and Colorado were greener, but none 

 agreed with, or even approached the average of the Regina specimens. 

 Mr. Scudder, however, on account of the close similarity of the markings, 

 seemed to be of opinion that the Regina form must be a variety of 

 Manitoba. At New York Mr. Neumoegen kindly allowed me to compare 

 my specimens carefully with the Pamphilas in his magnificent collection, 

 but no specimen was found which at all agreed with the Regina form, 

 and Mr. Neumoegen expressed the opinion that I should be safe in 

 describing it ; but in order to guard against all danger of being accused of 

 rashness, I took the specimens out to New Brunswick, N. J., to Prof. J. 

 B. Smith, who very kindly, at my request, dissected the male abdominal 

 appendages of one of the Regina specimens, which upon examination 

 were seen to be practically identical with the illustrations of those of 

 Manitoba, drawn by the late Mr. Edward Burgess, and published by Mr. 

 Scudder. The form would therefore seem to be only a variety of 

 Manitoba, but Prof. Smith expressed the opmion that it might very 

 properly receive a varietal name as a distinct geographical race. Mr. 

 Scudder, however, in his " Butterflies of New England " would seem to 



