830 FIFTH EEPORT OF THE ENTOMOLOGICAL COMMISSION. 



under the bark of the spruce. The cells, like those found in the pine 

 branches, were situated under the bark of the trunk of spruces 6-12 

 inches in diameter, and contained the pupa or more commonly the 

 imago. The beetles were also found flying about at this date. 



13. The ribbed rhagium. 



Bhaginm lineatum Olivier. 



Already described on p. 704, this insect occurred in the larva state in 

 abundance under the bark of spruce stumps and standing trees, loosen- 

 ing the bark, but never doing any mischief, as far as we are aware, to 

 the living tree. Small larvte, only 4 or 5""" in length, occurred in 

 spruce stumps August 25, while others were 14""° long. Fully grown 

 ones occurred in neighboring pine stumps, and one, after having been 

 kept in confinement until the last of September went into the pupa 



state. The eggs from which the smaller 



jx:> ones hatched were probably laid in the 



_ '*>' early summer; the trees containing these 



/^ grubs were cut down in November, 1880, 



"Xjf so that it is not probable that the larva 



■^ lives more than one year. 



^x 



14. Xylotrechits undulatus Say. 



l\ This longicorn is with little doubt a borer 



'i \ -^ ^ in the spruce (see Lintner Ent. Contr. iv, 



\ ^^^ 96), and I have beaten it out of spruce 



I •'[ trees at the end of July. I have also re- 



I I ' ' I ceived' it from Tacoma, Wash., and it 



~ i I ' ^ occurs in Northern New York according: 



» I f ^ \\ to Mr. Hunt. 



\ t \ AFFECTING THE LEAVES. 



""^ ""^ T \J ^^ ^^' '^^^' SPRUCE-BUD WORM. 



/y Tortrix fumiferana Clemens. 



// Order Lepidoptera; family Tortricid^. 



// 



// (Plate VIII, moth, figs. 1, la; larva, figs. U, Ic, 



// Id; pupa, le, If. Map, PI. XII ; also, for rav- 



£/ ages, Pis. XIII and XIV.) 





Fig. 281. — Xylotrechus undulatus. 



The most destructive enemy of the 

 spruce and fir in Lincoln, Sagadahoc, and 

 Cumberland Counties, Me., is the Spruce- 

 bud worm. 



The habits of this insect while in confinement have been studied by 

 Prof. C. H. Fernald, formerly of the Maine State Agricultural Col- 

 lege, Orono, Me., and his account published in the American Naturalist 



