INSECTS AFrErTINT, PARK AND WOODLAND TREES 369 



Description. The hccllc is much llalL(MH:d and is about jj inch lon^, 

 with liie head antl thorax hhick, and the striated win^' c(n-(::rs a dark Iduish 

 green. Th(; powerful jaws are rufous, tippeil with bhick, and the antennae, 

 legs and abdomen are similiarly colored. The insect is represented on 

 plate 64, figure 2. 



The pupa is whitish, more slender than that of Rhagiuni, and ma)- 

 easily be recognized by its occiu'ring in cells with walls composed entirely 

 of nearly rotten particles of bark | pi. 64, hg. 3 |. 



The pupal cell is nearly circular, al)out ■'^^ inch in diameter, and is 

 constructeil betwet-n the bark and the wood. There is no excavation in 

 the wood and the walls are composed only of partly rotten borings | [)1. 64, 

 fig. 9]. The difference i)etween the cells of Rhagium and Pytho is well 

 brought out in the illustration. 



Life history. The larva evidently becomes full grown the latter part of 

 the season and transforms to the pupa and then to the beetle before the 

 approach of cold weather. The species hibernates probably very largel\- in 

 the pujjal cells or under the bark. 



Bibliography 

 1893 Hopkins. A. D. W. Va. .\gric. Ex|>. Sta. liul. 32, ji. 204 



1899 ^\ . \a. .Auric. I^xp. .Sta. Bui. 56, p. 441 



1903 Felt, E. P. For. Fish & (lame Com. 7th Rip't, p. 494 



Spruce timber beetle 

 Xylol cms bivillatiis Kirb)- 



.\ rather stout, brownish black, beetle, about ja inch long, attacks the exposed wood 

 of various coniferous trees. 



The deserted galleries of this species were found by the writer in a 

 si)ruce log at I'loodwood in 1901. This beetle was breeding Aug. 23 at 

 Axton in a stump of a balsamtree which had bec-n cut the preceding .April. 

 It has been recordeil b\ Dr llopkins as infesting black spruce and hemlock 

 in West X'irginia, ami Dr Packard states that th(! insect occurred, though 

 not commonly, under the bark of a tlr in the White moimtains near the 



