118 THE CANADIAN ENTOMOLOGIST. 



Pacific Coast. P. machaon has been reported as far south as the north- 

 western United States, probably about lat. 48" or 49°^ by Dr. Hagen and 

 Prof. Henshaw, 



Pieris rapce, Linn. This is found in ten provinces, thus covering a 

 less area than the preceding, and ranging from 58° to 69° 30', or from the 

 extreme southern to within one and one-half degrees of the northern 

 extremity. In America it extends from the Atlantic Coast to the Rocky 

 Mountains, and from about lat. 30° to 48" and possibly beyond. 



Pieris napi, Linn., (cum v. iiepce.ce, Esp., and bj-yonice, Ochs.) This 

 has a still wider range in Norway, occurring its entire length from 58°. to 

 71'. and in all but one of the provinces, this being Stavanger,- at the 

 south-west and coastal. With us, bryonice is found from Alaska east- 

 ward to Newfoundland. In his recent work, " Brief Guide to the Com- 

 moner Butterflies of the Northern United States and Canada," Mr. S. H. 

 Scudder has considered this species under the specific name o/eracea, 

 Bois., of which he says : This northern species occurs throughout all but 

 the southern parts of our region, though in scanty numbers except in 

 mountainous districts ; it appears, however, to be absent from the prairies 

 west of the Mississippi river, and wherever it has come in contact with P. 

 rapce., it has become relatively rare. Prof French calls my attention to 

 iiapi being given in Mr. Edwards's list of 1884, from Michigan, and Prof 

 Blatchley has since recorded it from northern Indiana, about lat. 41°, 

 which is probably about its southermost limit, east of the Rocky 

 Mountains. 



Coiias paloetiOy Linn., {v. Lapponica, Stg.) This is almost as widely 

 diffused in Norway as is the preceding, occurring in all but four of the 

 provinces and ranging from 58" to 70° 25'. It is rather a curious fact 

 that provinces where it is not recorded as occurring, Stavanger, South 

 Bergenhus, North Bergenhus and Romsdal, all lie in the south-western 

 part of the country, along the coast, while inland it is found in precisely 

 the same latitude. With us C. palce.710 is found in Labrador. 



Coiias hecla, Lef. The Norway distribution of this species is limited 

 to three provinces, Nordland, Tromso and Finmarken, the range being 

 from 66" 50' to 70°, these provinces being the three northernmost. In 

 North America the species is distributed from Alaska to Greenland, its 

 southern boundaries being as yet undefined. In case C. Meadii and C. 

 elis should either one prove to be varieties of C. hecla^ then Mr. Thomas 



