6 E Canadian Arctic Expedition, 1913-18 
late than in Arctic species. D. punctatus Lee. has been recorded from West 
Virginia, New York, and Pennsylvania, but has apparently never been taken 
in Eastern Canada. 
Described from about sixty immature adults, taken by Mr. Johansen, 
dead, in the dried bark at the base of a large dead tree, in February. The 
beetles had evidently been dead sometime and were brittle, so that many are 
in poor condition. Mr. Johansen considers these beetles the primary cause 
of the death of the tree. It appears that some agency, probably abnormal 
weather conditions, had killed the broods that he found before they emerged 
from the bark. 
Genus Carphoborus Eichh. 
Eichhoff, Berl. Ent. Zeit., 8: 27, 1864. 
Carphoborus andersoni, n. sp. 
Plate II, figure 1. 
Length, 2-5 mm.; width, 1 mm.; colour, pale reddish (immature). 
Description of the Female: The head has the front flattened and densely 
clothed with a brush of rather short yellow hairs; the antennae slender, the club 
longer than wide. 
The pronotum is slightly wider than long, with the sides arcuately narrowed 
from base to apex, only feebly constricted in front; the front broadly rounded; 
the disc closely and deeply but not coarsely punctured, the median line very 
faint; the pubescence very small, scale-like, not concealing the surface. 
The elytra are elongate, the sides subparallel, broadly rounded behind; 
the bases very strongly elevated and rugose as usual; the striae distinctly im- 
pressed, as wide as the interspaces, the strial punctures coarse and closely 
placed; the interspaces convex, feebly granulate, clothed with abundant rather 
slender pale scales which do not entirely hide the surface; the declivity with 
the 1st interspace but little more elevated than the 2nd and only feebly granulate, 
the 2nd interspace convex, nearly smooth, narrower behind; the 3rd interspace 
rather strongly elevated and armed with 5 or 6 rather coarse acute serrations; 
5th and 7th interspaces united in a rather broad curve slightly elevated behind 
and together bearing 3 or 4 acute serrations. This species will go in my key, 
Dom. Ent. Br. Bull. 14, pt. 2, p. 57, under AA, BB, but is widely separated 
from hicristatus and hifurcus by the large size, coarse declivital serrations, less 
elevated declivital alternate interspaces, and characters of the front. 
Type No. 153, Sandstone rapids, Coppermine river, Northwest Territories, 
F. Johansen, collector; Feb. 15, 1915; 1 paratype (a few fragments); lot 2908. 
Host, Picea canadensis. 
One set of tunnels was found in a white spruce limb about one inch in 
diameter. The nuptial chamber is 6 mm. in diameter with the entrance tunnel 
indicated and three egg-tunnels; one of these is possibly complete, 6 cm. long, 
1 mm. wide, with 28 egg-niches and larval mines developed from 16 of these. 
The second egg-tunnel is 1 cm. long, with 3 egg-nichos cut, and the third tunnel 
is only started. The egg-niches are small and alternately arranged. The 
mines are probably not completed; the longest is slightly more than 2 cm 
in length. Some are modeiatcly elongate and some widen very rapidly. All 
are filled with white boring dust mixed with red excrement. The species had 
overwintered as immature larvae and two young immature adults. The stick 
was collected in February, 1915. 
