o 



50 THE CANADIAN ENTOMOLOGIST. 



This insect occurs in Amherst on Norway spruce. The larvae were 

 found May 7 to 10, 1891, and the following description was prepared by 

 Miss Rose L. Davis : 



"The larvae of this insect were found on young Norway spruces on 

 the Agricultural College grounds, under white silken webs at the base of 

 the leaves, which were mined by these minute larvae. A small hole was 

 made on one side near the base and the entire contents were consumed, 

 leaving the leaf dead and of a dull reddish colour. 



*'The larvae, when full-grown, are about 7 mm. in length, cylindrical in 

 form, with the head of medium size, of a shining yellowish-brown colour, 

 and with a few fine hairs scattered over the surface. The rest of the body 

 is of a light greenish-brown colour, semitransparent. The thoracic and 

 anal shields are of a pale greenish colour, with the usual fine hairs on 

 these and over the surface of the body. When disturbed they quickly let 

 themselves down by a silken thread. The moths emerged June 2 to 5, 

 1892." 



I received four male specimens in poor condition from Prof. R. A. 

 Cooley several years ago, taken in Montana, but without any particulars 

 as to food and habits. These differ in no specific way from the Maine 

 specimens sent me by Miss Patch, except in size, the wing expanse of 

 which is 14-15 nam. 



THE EARLY STAGES OF SAMIA COLUMBIA NOKOMIS. 



BY W. J. FREEDLEY, JR., PHILADELPHIA, PA. 



Eggs deposited April 18, 1908; length, 2.6 mm.; breadth, 2 mm.; 

 depth, 1.5 mm. Flattish, and with a slight compression top and bottom. 

 Colour of egg apparently creamy-white, but very much discoloured by the 

 brown adhesive matter which attaches it to the object on which found. 

 Eggs much smaller than those of S. Cecropia. Larva, when first emerged, 

 from 3 to 4.5 mm. in length, glossy-black, with light green shading at the 

 base of tubercles. The tubercles glossy-black, with from 3 to 7 spines 

 also glossy black. Head large, glossy black, sparsely clothed with hairs. 

 Within two hours the larvae lost all the green shading, changing to glossy 

 black all over. On the fourth day the segments had a faint ochraceous 

 shade showing, which on the sixth day developed into a strong ochre-yellow 

 ground colour for the larvae, which still had glossy-black head, tubercles 

 and spines. At the end of the sixth day the length was 10 mm. 



