69 



butterfly and we learn that there are two varieties that may be met with, 

 though very rarely, as this insect is very uniform in appearance, and in- 

 any case there is no other butterfly in North America which would be 

 likely to be confused with it. Should one wish to read further about 

 the butterfly there is the magnificent work of S. H. Scudder, "The But- 

 terflies of New England", published in 1886, in three 4*° volumes, beau- 

 tifully illustrated and a perfect mine of information, dealing with the 

 subject from every standpoint. The cost is about S75.00 which puts 

 it out of reach of most students, but should be accessible for reference 

 in large libraries. 



Another classic work is that of \V. H. Edward's, entitled, "The But- 

 terflies of North America", also in three volumes, which appeared in parts 

 from 1868 to 1897 and costs about S135.00. The species dealt with are 

 illustrated by the most exquisite hand coloured plates, and the drawings 

 of the early stages and the complete life histories have a value which can 

 never be excelled. 



There are a number of other works both ancient and modern which 

 might be mentioned if space permitted, but we must pass on to mention 

 the volumes which were coming out regularly in parts till the war broke 

 out. The Macro — Lepidoptera of the World, by Adalbert Seitz. Several 

 volumes have been completed and it is intended to include coloured figures 

 of every known species of butterfly and the larger moths. This work, 

 for reference purposes, will be invaluable to anyone who is deeply inter- 

 ested, for the plates will show a representation which no one museum 

 in the world could exhibit. 



For further information about our mourning cloak butterfly we 

 may go through the volumes of the various entomological periodicals. 

 Transactions of Scientific Societies and Reports of Museums and Experi- 

 mental Stations. Out of many may be mentioned The Canadian En- 

 tomologist, the organ of the Entomological Society of Ontario, now in 

 its 47th year; the Entomological News of Philadelphia; the Journal of the 

 New York Entomological Society; Psyche; the Transactions of the American 

 Entomological Society; Dr. Barne's Contributions to North American Lepidop- 

 tera, all of which are full of items, large or small, dealing with insects ex- 

 clusively, and containing many illustrations. Other periodicals have been 

 published for a while and have come to untimely ends, such as Insect 

 Life, Papilio, and Entomologica Americana; but, though memories of 

 the past, the information in their pages will never cease to be of value, 

 nor the work of their contributors forgotten. 



