840 
ANNUAL REPORT OF NEW YORK 
ELM. TRUNK. 
the first is largest and has a flattened tawny space above covered with 
minute rust colored dots; its pupa lying in an oval cavity in the bark and 
the latter part of May coming out, a cylindrical blackish long-horned 
beetle with an orange yellow or red stripe along each side of the body, 
which on the wing-covers sends three equidistant branches inward towards 
the suture, the two hind ones oblique, its length 0.38 to 0.55. 
Where the slippery elm trees are killed, as they all are in my own 
vicinity, by having the bark peeled from around their trunks for medi¬ 
cinal purposes, the remaining bark immediately becomes filled with these 
worms, by which all its inner layers are consumed within a few months and 
changed to worm-dust. The beetle deposits its eggs upon the bark in 
June, and the young larvae therefrom nearly complete their growth before 
winter, and soon after warm weather arrives the following spring they pass 
into their pupa state. 
\ 
The larva when mature is about 0.65 long and 0.12 broad across the anterior end where 
it is broadest and slightly tapers from thence backward. It is divided into twelve segments 
in addition to the head, separated from each other by deep wide constrictions., the last segment 
being double or having a small additional segment received into its apex. Along the middle 
of the back is an impressed line or furrow. It is of a white color and clothed with fine short 
hairs. Its head is tawny yellow and sunk into the neck, the jaws black and slightly notched 
at their tips or two-toothed. The neck or first ring is the longest one in the series and has a 
flattened space on its upper side of a tawny tinge and covered with numerous minute rust- 
colored points but showing no impressed line along its middle, and on its under side in the 
middle is a faint transverse oval spot with similar rusty dots, and upon each side is a shining 
impressed crescent-shaped spot of a tawny tinge. The two segments following this are shorter 
than those beyond them. 
The surface of the beetle is occupied with small punctures from which 
numerous flue short hairs arise, which stand erect. This surface is of a 
glaucous grayish tinge, and or each side of the thorax below the orange 
stripe are two black dots. All the specimens which I have seen from the 
southern part of the State have an aspect so different from those of my 
own vicinity, that in the collections of amateurs they may frequently be 
noticed arranged as distinct species. They are of a darker livid gray hue, 
and their marks are dark orange red, instead of ochre or orange yellow, 
and on the wing-covers these marks are more prolonged, the middle one 
extending to the suture. This may be named the lfcd-marked (rubro- 
notata) variety. 
Another variety is sometimes seen, in which the branches from the 
lateral stripe upon the wing-covers are of a gray hue, and so very faint 
that they are scarcely perceptible. This may be named the Intermediate, 
[intermedia,) it being so slightly different from the following species as to 
excite doubts whether it is a hybrid produced by a crossing of these two 
species, or whether these insects are not in reality one species, varying 
merely from being reared in different species of the elm. 
342. Lateral Saperda, Saperda lateralis, Fabriciug. 
Mining the inner bark of dead trees and logs of the common elm, a 
grub in every respect the same with that last described above, and about 
