THE CANADIAN ENTOMOLOGIST. 57 



abdominal segment being larger than the others. The duration of the pupa 

 stage was ten or eleven days. 



Since the imago produced were under the average size, something must be 

 added to the length and diameter of the larva and pupa described. 



Argynnis hellona. — The eggs obtained from this species were unimpreg- 

 nated, and soon shrivelled up. In size and color they were similar to those 

 oîmyrina, but were not examined under a magnifying power. 



Polyommatus thoe. — These eggs were deposited by a beaten female about 

 the 6th of July, 1868. The egg is nearly round, a little flattened at the 

 apex, and flattened also at the base. Color greenish white, thickly indented; 

 at the apex is a considerable depression, around which the indentations are 

 small, but increase in size as they approach the base. 



Polyommatus epixantke.—Khovit the 10th of July, 18Q8, twelve eggs were 

 found attached to the lid of a small pill box, in which two females were con- 

 fined. The egg is nearly round, slightly flattened at the apex, flattened also 

 at the base. Color milk white, thickly indented, a deep depression at the 

 apex, and around this a number of indentations, which are nearly uniform in 

 size all the way to the base — in this latter respect differing from those of thoe. 



The eggs of both these species of Polyommatus remain as yet unchanged. 

 There is no appearance of shrinking on any part of their surface; it is possi- 

 ble they may produce the larva in spring. 



Theda morata, G. & R. (^Thecla falacer, Boisd. plate). — About the mid- 

 dle of July, 1868, two eggs were deposited on the sides of a pill box. They 

 were of a pale green color, nearly round, with convex apex, but flattened at 

 the base, with a number of slightly raised longitudinal lines approaohing each 

 other near the tip. The depressions are without punctures. Each egg has 

 a number of angular brownish spots distributed irregularly over its surface. 



This box was overlooked for several days, and when examined again, the 

 larvae were found to have escaped and dried up for want of food. 



SPIDER'S NESTS. 



BY WM. COUPEE, OTTAWA, ONTARIO. 



The genus Theridion construct beautiful silken nests for the protection of 

 their eggs. I have collected what I take to be the nests of three species in 

 Canada. They are generally found under the bank of decayed forest trees. 

 Another which I found on an old fence at Quebec, although not constructed 

 of silk, its form, in my opinion, is suflicient to class it among the architecture 

 of Theridion. One of these nests resembles that of Theridion variegatum 

 Walck., of Europe. It is pyriform, having a diameter of ith inch, covered 

 with strong, glossy, golden silk thread, evidently arranged for a two-fold pur" 

 2 



