STATlf AGRICULTURAL SOCIETY. 
*791 
OAK. TRUNK. 
only of the forward pair being opake and of a gray color; the hind wings 
of the male colorless, with the inner margin broadly blackish and the hind 
edge coal-black. 
This description will suffice to distinguish a species of which the two 
sexes were recently found at rest upon the trunk of an oak tree in Scho¬ 
harie, by I. A. Lintner, Esq. It is altogether probable from these facts 
that it is a borer in the oak, with other habits similar to those of the pre¬ 
ceding species. This discovery is the more interesting, since, so far as I 
am aware, the Locust Cossus has hitherto been the only species of this genus 
known as inhabiting our country, the Cossus Pynni of 1* abricius evidently 
pertaining to the genus Zeuzera. 
The Pigeon Tremex, T. Columba, I have met with inserting its eggs 
in the oak, but being much oftener found in the maple, will be described 
under that head. 
295. Northern Brentuus, Arrhcnodes septentrionis , Herbst. (Coleoptcra. Attclabiiho.) 
Perforating a cylindrical hole about the tenth of an inch in diameter, 
transversely through the bark and into the solid wood of standing, and 
much more often of newly felled trees, and thrusting its chips out at the 
orifice ; a slender cylindrical whitish worm an inch or more in length and 
scarcely 0.10 in diameter, with three pairs of legs on its breast and a thick 
fleshy pro-leg at its tip, its last segment horny and dark chestnut colored, 
and obliquely hollowed at its end, forming a kind of scoop with little teeth 
along its edge; changing in its burrow to a long yellowish white pupa, 
having its head bent down under its breast and its long beak lying between 
its leg and wing-sheaths, its back with transverse rows of little sharp teeth 
and two sharp spines at its tip; changing into a long cylindrical beetle 
about 0.60 in length, of a mahogany brown color, it wing-covers usually 
black and with narrow tawny yellow spots upon the rounded spaces between 
the furrows, its thorax egg-shaped and highly polished, its head ending in 
two large jaws in the male, and in the other sex a slender cylindrical beak 
with small jaws at its tip, whereby it bores into the bark and then pushes 
an egg into the opening. 
Though most common in oaks this beetle is not limited to wood of this 
kind. On removing the loose bark from fallen trees it will sometimes be 
seen projecting partly out of its burrow in the wood ; but the collector will 
most readily supply himself with specimens among the piles of sawed oak 
lumber in mill yards in May and June. It differs remarkably in its size. 
I have a specimen the total length of which is but 0.25, and which is pro- 
portionably slender. It was one of these dwarfs from which Drury 
described this species under the name minimus, long anterior to Herbst. 
But this being the name of a mere variety, it cannot supplant the name 
subsequently given, which has been universally adopted and is highly 
appropriate, since the several species nearest akin to this all inhabit warm 
climates. And Olivier hence deemed South Carolina to be tho northern- 
