INSECTS INJURIOUS TO THE PINE. 151 
its wing-covers tapering, and this narrowed portion more lengthened 
than in any of the foregoing species, their surface occupied with close 
fine punctures and double rows of coarse ones, the narrow spaces be- 
tween these rows often elevated in places, the elevations forming smooth 
oblong spots or irregularly interrupted ribs ; the thorax with coarser con- 
fluent punctures and with four elevated smooth stripes, the outer ones 
narrower and interrupted by a slight depression in the surface back of 
their middle ; and finally, a smooth transverse elevation upon its front, 
extending from one eye to the other, is a mark whereby this species may 
be readily distinguished from most of those related to it. (Fitch.) I 
have found a dead beetle under the bark of the pitch pine in the same 
stump with Buprestis lineata in May, 1881, at Providence, Rk. I. 
14. THE TUBERCULATED BUPRESTIS. 
Dicerca tuberculata Laporte. 
Another beetle which is met with upon the pitch pine, and resembles 
an individual of the preceding species of a more brassy tint and having 
all its marks more coarse, rough, and irregular; but the rows of coarse 
punctures on its wing-covers are at equal distances from each other 
instead of being in pairs, the intervening spaces having many irregular 
elevated black polished spots, and the elevated transverse line upon the 
front is interrupted and less prominent, and its size is rather larger, 
being about 0.60 inch long. (Fitch.) 
15. THE SLENDER DICERCA. 
Dicerca prolongata Leconte. 
Although originally recorded by Leconte from Lake Superior, Wiscon- 
sin, and Nebraska, we have found this Buprestid among the pines and 
poplars in the mountains of Colorado, and are disposed to 
regard it as a pine beetle, though our specimen was found on 
a poplar tree. : 
It is described by Leconte as being coppery gray, often 
pruinose; the width of the thorax twice its length, sides well 
rounded in front, behind somewhat sinuous, punctate, fur- 
: - 5 : ; - Fic. 67.—Di- 
rowed, each side with an oblique, deeply impressed line; wing- cerca pro- 
: : | act longata, 
covers with deeply impressed lines; apex rounded, the  Colorado.— 
; ales? se te From Pack- 
wing-covers scarcely divaricate. Length 0.77 to 0.85 inch. ard. 
16. THE PINE DICERCA. 
Dicerca tenebrosa Kirby. 
Mining under the bark of the white pine, the beetle occurring in October. (G. 
Hunt.) 
Leconte describes this beetle as follows: ashy-bronze or obscurely 
bronze, the prothorax dilated on the sides, which are rounded in front, 
sinuous behind, coarsely punctured; behind broadly excavated on each 
