862 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



6. Rhagium lineatum Olivier. 



Larvae of this beetle, one-half grown, occurred August 27, at Bruns- 

 wick, in a fir stump. 



AFFECTING THE LEAVES. 



7. The fir-tree saw-fly. 

 Lophyrus alietia Harris. 



Order Hymenoptera ; family Tenthredinidje. 



This pest of the fir which also infests pines has been described on 

 page 757. 



The specimens I found of this species, the females of which I raised 

 from the larva and submitted to Mr. E. Norton for identification, had 

 larvse, of which the following description is taken from my notes. Much 

 like that on the cedar and juniper, but darker green, with a black head 

 and thoracic feet. Median dorsal stripe pale instead of dusky, and be- 

 sides a pale subdorsal stripe, with a whitish green lateral firm stripe. 

 Beneath paler green than above. Of the same size. It spun a light 

 silk cocoon August 23. The imago was found dead in the breeding box 

 September 14, 1881, and must have left the cocoon during the first week 

 in September. The antennae are black, serrated. Body dull horn- 

 yellow ; abdomen a little paler, more amber colored ; legs concolorous 

 with the body. Wings smoky, with black veins. Length 7""". Cocoon 

 regularly oval-cylindrical ; of a pale silken brown ; length 8™™. 



8. The TUSSOCK MO I H. 

 Orgyia leueosiigma Abbot-Smith. 



Order Lepidoptera ; family Bombycid^. 



Feeding on the leaves of the fir in July and August in Maine, a hairy caterpillar 

 with two black pencils ot hairs in front, one median, one behind; four medio-dorsal 

 short thick yellow tufts, succeeded by three dorsal coral-red tubercles, on the back. 



The hairs of this caterpillar are quite poisonous, and if they get through 

 or into the skin prove very annoying. I once crushed one of these 



