660 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
the third joint is not quite so long, and is scarcely half as thick as the second ; its tip 
is acute, and reaches out as far M the end of the second joint of the maxillary palpi. 
The maxillary palpi are four-jointed, very broad at the base; the first joint is scarcely 
half as long afl broad; the third is a little longer than the second, while the fourth is 
much slenderer than the others and about the length of the 3econd joint. The man- 
dibles are large and powerful, when closed not reaching as far as the end of the max- 
illary palpi : the ends are truncated, gouge-like. On the prothorax is a large, ob- 
Benrely marked, squarish, very slightly horny (chitinous) area, scattered over with 
hairs, especially on the anterior edge. On the upper side of each segment of the body 
is a broad oval area, with a series of oval gatherings or folds on each side of the 
transverse mesial main fold; those ou the three rings succeeding the head (thoracic) 
are the same, but broader. There are no rudimentary thoracic legs. The end of the 
abdomen is blunt, well rounded, with the extreme tip forming a rounded portion. It 
is .35 of an inch in length. 
Papa.— White, and in the single specimen observed was quite far advanced, the 
body being covered with hairs. The wings were quite free from the body, and the 
autenu® curved around outside the wing-covers, their tips meeting at the base of 
the head. The first and second pairs of legs are folded at right angles to the body, 
the third pair being oblique to the body. The tips of the first pair of tarsi reach to 
the base of the second pair of tarsi ; the tips of the secoud pair of tarsi do not i 
to the base of the third pair of tarsi, the third tarsi not reaching to the tip of the 
abdomen by a distance equal to nearly their length. The prothorax is full and 
convex, the hinder portion being larger in proportion to the rest of the body than 
in the adult beetle. It is a quarter of an inch in length. 
The beetle.— The beetle is characterized by four raised lines on each wing-cover, 
with five or six black dots on each line or rib. Au oblique black line diverges from 
each side of the scutellum. Just in front of the middle is a triangular pale space, 
bounded behind by an oblique dark line. In color it resembles the bark of the ash : it 
is a quarter of au inch in length. Gray, with bauds and spots of blackish pubescence. 
Antenme about one and one-half the length of the body, joints blackish at the articu- 
lations ; hoary, mottled with cinereous aud light brown between. Elytra hoary-cin- 
ereous, or slightly shaded with light brown, marked with an imperfect broad trans- 
verse baud before the middle and with two oblique bands and many smaller spots of 
blackish behind the middle; in some specimens the gray predominates, in others black, 
in a few the bands are almost obsolete, being merely spotted with black. Thorax with 
two broad longitudinal liues converging to a point in form of the letter V ; each sido 
behind the middle with an angular spine-like projection. Head depressed between 
the antenna', gray, with some small black spots; ou the occiput a posterior .median 
half-liue and many small black spots, not equally well defined in all specimens. 
Beneath cinereous, incisures blackish ; legs gray, somewhat spotted with black. 
Length, about .25 inch. (Shimer.) 
2. AIicraci8 suturalis Le Conte. 
Order Coleoptera : family Scolytid.e. 
Observing a small round hole, like a pin hole, in a dead prickly ash 
bush, Dr. Shimer cut out two specimens of this timber beetle, and 
afterwards obtained more by cutting iu the dead wood, " where the 
bark was adherent and where the Liopus larvae had not worked. They 
are only found in imago now, and iu this state appear to have entered; 
their holes are entirely free from chips and I usually found them with 
their heads inward : their holes frequently intersect and wind in various 
directions; sometimes they have several e vternal openings, aud when 
