THE CANADIAN ENTOMOLOGIST. 77 



him to continue his unselfish labours he had to sacrifice many of the 

 valuable type specimens in his collection. 



The Part which has just come to hand contains three plates and nine 

 pages of descriptive letter-press. Of the former, which have been 

 executed under the supervision of Mrs. Mary Peart, it is not too much 

 to say that they are exquisite, and are all equal to the very best in 

 Vols. I. and II. 



Plate I., which is accompanied by a complete life history, illustrates 

 Colias Eur y dice Bd., var. Bernardino Edw., in all its stages, from egg to 

 maturity, and also a female of var. A?norphce Hy. Edw. 



On Plate 11. we have a life-like representation of Argymiis Nitacris 

 Edw., male and female. 



On Plate III. we find figures of Argy?i?iis Lais Edw., a pretty little 

 species (but belonging to the same group as Cybele, Atla?itis and Electa), 

 discovered in the Northwest Territories by Capt. Gamble Geddes, in 

 July, 1883. The artist has been particularly happy in the coloration of 

 this plate, especially so in catching the peculiar dull ochrey-brown tint 

 which is characteristic of the female. Of most interest to Canadians, 

 however, is the fact that although this species is abundant in certain 

 parts of the Northwest Territories, easily accessible, and comparatively 

 well settled, nothing is known of its preparatory stages. The eggs of the 

 species belonging to the same group are easily obtainable by tying 

 females over growing plants of violets. Surely some of the readers of the 

 Canadian Entomologist have friends Hving in the Calgary District, or 

 at McLean, where it is very abundant, who, even if not entomologists, 

 would, were the scientific importance of the results placed before them, 

 at any rate take the trouble to confine a few females in gauze bags over 

 living plants, and send Mr. Edwards the eggs. There is very little 

 trouble about this matter ; living roots of violets can be sent by mail in a 

 piece of oiled-paper, and will grow easily, if kept watered, in any of the 

 tins used for canned vegetables (flower-pots are rare commodities in the 

 N. W. T.) All that is necessary is to bend two pieces of wire so as to 

 make a pent-house over the plant, and then placing a bag of muslin over 

 the whole, secure it by means of an elastic band round the top of 

 the can. This should be kept out of doors in a shady spot. 



The importance of Mr. Edwards's studies on the Diurnal Lepidoptera 

 of North America is perhaps hardly appreciated, until we remember that, 

 with the exception of a few of our commonest butterflies, almost nothing 



