ENTOMOLOGICAL SOCIETY OF ONTARIO. 71 



The larvae I reared were about a week later in their changes than those raised by 

 Mr. Brainerd. This was owing, no doubt, to the difference of climate between Quebec 

 and Montreal. At Quebec the eggs hatched on May the 8th. The larvae moulted on 

 May the 13th, May the 21st, and June the 2nd, and pupated June the 20th. This 

 species spends probably eight months in the pupa. 



Ctenuoha Virginica, Charp. 



On the expedition above referred to I obtained larvse of Ctenucha Virginica, Charp, 

 which had just aroused themselves from their winter's sleep, and were feeding on the 

 wild grasses in the wcod. This is a description of them at the time : 



Head reddish brown, sides and back set with pencils of black hairs, a sub-dorsal 

 row of tufts of whitish hairs springing from a white line, spiracular line white ; moulted 

 April the 26th. 



After Moult, head chestnut red with black face. A frill of white hairs round the 

 head. Distinct black tufts along the back, sub-dorsal lines pale yellow with yellowish 

 tufts, white spiracular line with tufts of whitish hairs, legs red ; moulted May the 21st. 



Full Grown Larva, one inch in length, head ohestnut-red with black face, mouth 

 organs white, a dorsal line of black tufts bordered on either side with a line of yellow 

 tufts, sub-dorsal line yellow, spiracular line white, between them a line of black tufts* 

 under parts black, legs red. 



One larva was almost white — the tufts on its back were yellowish. 



Of three that I took particular notice of : — 



The 1st spun up May the 28th, and the moth appeared June 25th. 



The 2nd " June 9th " ■« July 7th. 



The 3rd (the pale one) spun up June 30tb, and moth apeared July 18th. 



Newly caught females of C. Virginica laid eggs which hatched on July 25th. The 

 larval stage of this species therefore extends over a period of ten months or more. 



The Case-bearer of the Birch. 



In the beginning of May, as soon as the leaves of the birch were fairly opened there 

 appeared upon them the curious habitations of a species of Coleophora. The following 

 is a description of the larvae producing them : — 



Head brown with a pale V-like mark — opening towards the front — and a few white 

 bristles, shield on second segment brown divided by a pale line, small shield on third 

 segment and anal plate brown, claspers brown, general body color brownish-salmon* 

 darker on the back ; length on the 24th of May, two-tenths of an inch. 



The larval case at first appears as a closely-woven, elongated capsule with little 

 brown tufts in it. The occupant, when it finds this habitation too narrow, selects at the 

 edge of a leaf a portion bordered with two or three serrations. This it hollows out by 

 eating away the parenchyma. Then it works its way in, cuts off the selected portion* 

 and proceeds to unite the free edges, thus making a new tent. It fills up all awkward 

 insteratices with a fine web. Under the microsoope the veins and stomata of the skele- 

 tonized section of leaf thus appropriated present a beautiful sight. 



In feeding the larva bites a round hole in the cuticle of thfi leaf on one side, and 

 then eats away the parenchyma as far as it can reach on every side without leaving its 

 case entirely. 



The larvae ceased feeding in June, and the moth appeared on July 9th. This is a 

 description of it : — 



Colour, pale silvery ash, a tinge of reddish-brown on the after part of the primaries, 

 secondaries narrow, ciliate on both sides, eyes black, antennae beautifully ringed — brown 

 and white, fringes slightly tawny, tibia? of hindmost pair of legs clothed with long hairs, 

 expanse of wings half an inch, length of antennae three-twentieths of an inch. Length 

 of body, one-fifth of an inch. 



