438 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
It seems to us most probable that this borer also infests the pitch- 
pine, since we have seen these beetles living at noon in abundance IE 
the middle of July on the sandy plains of Brunswick, Me., among 
pitch-pines, 2 or 3 miles away from any poplars; and have captured 
them among pines at intervals for twenty-live years past. 
Larva. — Average length when full grown, :; inches. Color pale yellowish-white, 
partly translucent, with glaucous and hluish shadings, and a distinct dorsal line of 
tin- last color; 13 distinct segments. Segment 1 rather horny, somewhat longer than 
2, 3, ami 4 together, broadening posteriorly, slightly shagreened and whiter than the 
rest of the body, with a rust-colored mark anteriorly, and a slight groove along the 
middle. Segments 2 and 3 shortest and broadest, the body tapering thence gradu- 
alh to extremity, though there is usually a lateral ridge on segment 12 which dilates 
it rather more than the segments immediately preceding it. This segment 12 is also 
the longest, the terminal one being quite small and divided into three nearly equal 
lobes. A swelled hump crossed with two impressed transverse lines on segments 4, 
5, 6, 7, d, 9, and 10. Stigmata rust-colored, 9 in number, the first and largest being 
Fig. 163.— Larva of broad-necked Prionus.— After Riley. 
placed on a fold in the suture between segments 1 and 2. Head brown, verging to 
black on anterior edge. Mandibles large, strong, black, with one blunt rounded 
tooth, giving them a somewhat triangular appearance ; antennae 3-jointed and brown, 
especially at tip; labrnm fulvous, fuzzy and with a brown base; maxillary palpi 
4-jointed, the basal joint much swollen, the terminal joint brown, and a ring of the 
same color at sutures of the other joints; labial palpi 3-jointed, the basal joint also 
swollen, and the terminal joints and situres of the others brown. Six rudimeutary 
2-jointed fuscous feet as shown at Fig. 163 tubercled as on the back, these tubercles 
being especially prominent on segments 6, 7, 8, and 9, where they recall prolegs. The 
young larva differs only in lacking the rust-colored mark on segment 1. (Riley, 
Amer. Eut., ii, p. 232.) 
5. Buprestis fasciata Fabr. 
Mr. Fletcher reports (Canadian Entomologist, xv. p. 203) fiudiug this 
beautiful beetle common on poplars, and had fouud a larva in poplar 
wood which he thought, from its appearance, might belong to that 
species. 
6. The xyleutes borer. 
Xyleutts popuJi Walker. 
Nothing is known to us concerning this moth, except that the specific 
name indicates that it occurs on the poplar. The habitat mentioned by 
Walker, is St. Martin's Falls, Albany River, Ehulsou's Bay, the original 
specimen described by Walker being in the British Museum. 
