JUNIPER WORMS. 907 
again the 13th of May, 1881. It is probable that the beetles had hiber- 
nated in their mines, having transformed into the pupa state the pre- 
vious autumn. The mines may be recognized by their long sinuous 
shape, beginning very small and gradually widening and ending in a 
broader space or cell where the larva transforms into the beetle condi- 
tion; just before the cell, at its widest part, it measures 6 mm in width. 
The larva, as it eats its way along under the bark, does not sink deeply 
into the wood, simply scoring it, while the gallery is filled behind it with 
the tan-brown castings of the worm, consisting of partly digested bark, 
forming a fine paste which hardens and compactly fills the shallow 
groove. In general appearance the mine of this borer does not essen- 
tially differ from that of most of the superficial Jongicorn borers of other 
trees. The beetle is entirely deep Prussian blue, and may be readily 
identified by its color. It varies much in size. 
3. The blue-clouded hylotrupes. 
Hylotrupes ligneus Fabricius. 
We have not personally observed the habits of this borer, which is 
said by Mr. George Hunt to bore under the bark of Juniperus virgini- 
ana in Rhode Island. The beetle may easily be recognized by its 
brown head, antenna?, prothorax, and legs ; while the wing-covers are 
yellowish, with two large adjoining dark Prussian blue patches at the 
base, the patches rounded behind and extending 
to the middle of the wing-covers ; the terminal 
third of the wing-covers are also deep Prussian 
blue, so that only the edges and a transverse 
copal-yellow band across the wing-covers are 
left. It is from 9 mm to 12 mm in length. 
AFFECTING THE LEAVES. 
4. The juniper twig inch-worm. 
Drepanodes varus Grote and Robinson. 
Order Lepidoptera; family Phal^nid^:. 
(Larva, Plate x, fig. 1.) 
Very closely resembling the smaller twigs of the iuni- 
, , ,. , . . , FlG. 300— Hylotrupesligneu*.— 
per, a rough-bodied span or measuring worm an inch and s th i\ 
a half long, transforming to an ocher-brown moth. 
The accompanying engraving well represents this singular *mimetic 
form, which so closely resembles in form and color the smaller twigs of 
the juniper. Two of the caterpillars are represented, one holding itself 
