LITTLE BARK-BEETLES. 715 
the terminal third of the wings. The antennae are clavate, not extend- 
ing beyond the coxa? of the first legs. It is larger, more bulky than the 
adult. Length, 0.22 inch. 
The beetle (Fig. 247) is cylindrical, with the head and prothorax to- 
gether three fourths as long as the rest of the body; end of the abdo- 
men suddenly truncated, slanting, forming a scoop, the declivity smooth r 
concave, and bounded by high walls, which are four-toothed on each 
side, the third from the top the largest. On each wing-cover are eight 
lines of fine, raised tubercles ; prothorax with concentric rows of fine 
tubercles, but smooth on the posterior third. Seen from beneath, the 
wing-covers project well beyond the end of the abdomen. Color, pale 
tan- brown, a little paler on the thorax than on the wing-covers. Body 
covered with stiff; dense hairs. Length, 0.20 inch. 
43. The little bark-beetle. 
Pityophthorus annectensf LeC* 
Under the bark of small sapling pines, mining exceedingly fine slender wavy bur- 
rows running in every direction, a cylindrical chestnut-brown bark-beetle much 
smaller than any of our other species, measuring only 0.06 in length, its surface shin- 
ing and pierced with small deep punctures which on the wing-covers are placed in 
close rows, the thorax but half as long as the wing-covers and rough anteriorly from 
dense minute elevated points, the middle of the outer edge of the wing-covers show- 
ing a slight concavity, the declivity at their tips with a moderate excavation formed 
by a smooth longitudinal groove upon each side of the suture, the suture itself being 
elevated and having on each side of it an impressed line m which are minute punct- 
ures, the outer margin of the declivity with numerous fine bristles, but without any 
projecting teeth, and the tips of the wing-covers drawn out into a very small acute 
point. 
" This beetle very closely resembles the T.ramulorum of Perris, which 
mines the small twigs of European pines, but it is evidently a distinct 
species. It was described by Dr. Harris in the Transactions of the 
Natural History Society of Hartford, Conn., vol. i, p. 82, from a speci- 
men imperfectly displayed, which he met with in the collection of Mr. 
Halsey, but he had no knowledge of its habits. And this I believe is 
the only notice of this insect which has hitherto appeared. Its minute 
size has probably caused it to be overlooked by collectors, although it 
is so common that the bark of dead young pines which are 2 inches 
in diameter or less can seldom be broken away without coming upon 
its tracks, with some of the dead insects in them. Its tracks are readily 
* Le Conte states that this is not the Tomicus pusillus of Harris, as Fitch supposed, 
"but is quite different, and is closely allied to T. ramulorum Perris, which is consid- 
ered by Eichhoff as the same with typographic Ratzeburg." Le Conte adds in a letter 
that this is most probably P. puberulus. He also in the same letter adds : "P. annec- 
tens LeC, found in Florida in yellow pine, resembles in sculpture ramuloriun; and 
agrees with Fitch's description of 34 [of Packard's Bulletin] in having the elytral 
punctures arranged in rows, and the sutural angle acute. It may really be the same 
as your 34, but as the localities are so widely apart, and the food tree different, I am 
unwilling to express a positive opinion until I can compare the specimens." 
