56 THE CANADIAN ^^ OMOLOGIST. 



high mountains in temperate latitudes in Europe and America. Mr. 

 Scudder asks "what relations of structure do the species of these 

 different localities and varying range of habitat bear to one another ? " 



Specific relations are just what we want to have elucidated, but it is 

 difficult to obtain material for this work while butterflies of the genus 

 Chionobas are confined to frigid, unaccessible localities. Mr. Scudder 

 deserves the gratitude of entomologists for his able Revision of the 

 Chionobas, and in defining the species known to occur in our Northern 

 and Alpine regions. I may here remark that I did not see a species of 

 this genus during my two visits to Anticosti, and I cannot account for 

 their absence from the island. 



After returning from Labrador in 1867, I sent Mr. Scudder $ speci- 

 mens of a Pieris taken on the south coast of the Lower St. Lawrence, at 

 Natashquan. His answer, dated Oct. ist, 1867, is as follows : " Pieris : 

 " I am inclined to think this is P. frigida, Scudd., described from Upper 

 '' Labrador, but I cannot be positive without seeing some ^ ^ from your 

 " collection." I had no ^ ^ at that time, and therefore could not send 

 them ; but I took it for granted that the species was his Pieris frigida. 



I made a subsequent collection on the Island of Anticosti and 

 Labrador, in 1872, and captured a number of the above Pieris at Fox 

 Bay, as well as on the south coast of Labrador. The specimens were 

 -distributed to my subscribers under the name of P. frigida, according to 

 Mr. Scudder's determination. The gentlemen receiving the species (all 

 reputed entomologists) did not doubt that it was anything else than 

 Scudder's P. frigida until my return from Anticosti this year. I am now 

 informed by Mr. Grote that the Pieris is not frigida, but Ganoris oleracea 

 var. borealis. , 



Now, I have before me Mr. Scudder's paper in Proceed. Boston Soc. , 

 of Nat. Hist., vol. viii, Sept., 1861, in which I quote as follows ; 



"^ Pieris oleracea, Boisd. 

 " Pontia oleracea, Harris. 

 " Pieris criiciferarwn, Boisd. 

 '■'' Pontia casta, Kirby. 



" The butterflies described by Harris, Boisduval and Kirby under the 

 ■*' above-mentioned names are one and the same insect. It is found 

 " inhabiting the northern and eastern portions of North America, reaching 

 ■" rarely as far south as Pennsylvania, and extending eastward to Nova 



