22 



seeii to project (Fig. 2). Besides these unsightly masses of castings, 

 the presence of the caterpillars causes an exudation of pitch, which 



clings in large drops or tears to the 

 outside of the adjacent more or less 

 healthy cones. Where much affected 

 the young cones turn brown and sere. 

 The same worms had also attacked 

 the terminal branches and twigs of 

 the same tree, eating off the leaves 

 and leaving a mass of excrement on 

 one side of the twig, within which 

 they had spun a silken gallery in 

 which the worm lived. 



On removing the bunches of dis- 

 eased cones to Providence, one cater- 

 pillar transformed in a warm cham- 

 ber into a moth, which appeared the 

 end of October; its metamorphosis 

 was probably accelerated by the un- 

 usually warm autumnal weather. All 

 the others had by the 1st of Novem- 

 ber spun within the mass of castings 

 a loose, thin, but firm, oval cocoon, 

 about half an inch long aud a quar- 

 ter inch wide, but the larva? had not 

 yet begun- to change to chrysalids. 

 Whether in a state of nature they 

 within their cocoons, or, as is more 

 o- as moths by the end 



Fig. 2.— Mass of infested cones (original). 



winter over in the larval state 



likely, change to pup® in the autumn, appearin 



of spring, remains to be seen. 



The chrysalis is of the usual Phycid appearance, rather slender, but 

 with the abdominal tip blunt, with no well-marked creuiaster or spine, 

 though ending in the usual six curved stiff bristles, by means of which 

 it hooks onto the walls of its cocoon, thus maintaining itself in its nat- 

 ural position. 



I only fouud one tree next to the house thus affected 

 by this worm. It is probable that in a dense spruce 

 growth the trees would be less exposed to the attacks of 

 what may prove a serious enemy of shade spruces. The 

 obvious remedy is, to burn the affected cones and mass 

 of castings late in summer. 



Descriptive. — Larva. (Fig. 3.)— Of the usual Phycid form ; the 

 head and prothoracic shield deep ainber-brown ; the body reddish 

 carneous or amber-brown, with a livid hue ; a faint, dark, dorsal, 

 and a broader, subdorsal liue ; piliferous warts distinct ; each 

 segment divided into a longer anterior and shorter, narrower, pos- 

 terior section, bearing two dorsal piliferous warts, besides a lateral 

 one. Length 16 mm . 



Fig. 3.— Spruce 

 Cone-worm (en- 

 larged, original). 



