212 THE CANADIAN ENTOMOLOGIST. 



first, second and fourth annulets. A series of sub-dorsal, sooty black 

 patches, tapering posteriorly, varying in different individuals. The two 

 rows approach each other posteriorly, and on joint 13 form a single, 

 large, quadrate patch anterior to the pale suranal rim ; spots partially 

 broken between the annulets. A similar lateral row of sub-quadrate 

 spots ; a smaller one on sub-ventral ridge, and a small spot above base of 

 each abdominal foot, except toward the extremities of the body. Venter 

 immaculate. 



At maturity the larvae moult, leave the trees and form their reddish- 

 brown cocoons at the surface of the ground. Head shining sordid white 

 with a blackish shade all over the vertex and part way down the sides, 

 not on the clypeus ; sutures evident, eye in a black spot ; mouth red ; 

 width as before. Body sordid white, 6-annulate, slightly shining ; alimen- 

 tary canal empty. Black spots as before, but not sooty, slightly shining 

 and minutely white-dotted. Thoracic feet slightly blackish or wholly 

 watery-whitish. 



Found on Finns rigida and P. Banksiana at Woods' Holl, Mass., 

 in August. Flies emerged the following spring. This was determined by 

 Mr. MacGillivray as Lophyrus Lecontei (?); but as the larva corresponds 

 with Riley's description, I have left off the mark of doubt. 



Imago. — $. Shining black, a ventral band and tip of abdomen 

 rufous ; all the femora, tibiae and tarsi rufous, the anterior legs palest. 

 Veins and stigma pale brownish ; hind wings smoky outwardly ; antennae 

 2 1 -jointed. 



? . Reddish ; sides of thorax above wings and abdomen, except at 

 tip, black ; a black shade below sub-ventrally, especially on abdomen and 

 on anterior femora ; antennae black, 21-jointed. Cross-nervure of lance- 

 olate cell hardly oblique. 



The following synopsis will separate the larvae of Lophyrus at present 

 described in works to which I have access : — 



Larva without spots ; head black (Abies) Lophyrus abietis. 



Larva with angular black spots. 



Head black, no sub-ventral spots (Pinus 



strobus) Lophyrus Abbotii. 



Head red; small sub-ventral black spots (Pinus rigida, 



etc) Lophyrus Lecontei. 



