164 
the preceding segment. The arrangement of the wings, wing 
covers, legs, and antennae, and the position of the head, are well 
shown in the cut. Two white erect hairs are seen between the 
antennae, and another pair above and between the eyes. 
Several scattered slender spines appear upon the back of the 
protliorax. as well as an irregular transverse row upon each of 
the other segments of the thorax and abdomen. These hairs 
are especially long and strong at the tip of the abdomen, and a 
few likewise appear upon the tibio-femoral joints. The hairs, as 
well as the forceps-like claws at the tip of the body, already 
mentioned, doubtless serve to fix the pup^t skin in the earth when 
the beetle emerges. The spiracles are distinctly visible as small 
brown rings upon the back of each of the first eight abdominal 
segments, but upon the three remaining segments posterior to 
these they are not apparent. 
Imago (Plate XIV., Fig. 6).—The adult beetle is about one 
fifth of an inch in length by about half that in breadth, and 
a little widest posteriorly. Its head is nearly as wide as the 
thorax, smooth, or nearly so, with a large circular depression 
between the eyes, from which a narrow groove leads forward, di¬ 
viding between the antennae and enclosing between the branches 
of the fork an elevated ridge, which extends downward to the 
labrum. On either side of this, and in front of each antenna, 
the surface is minutely rugulose. There is also an angular de¬ 
pressed line just within each eye. The antennae are rather long,, 
extending backwards bevond the middle of the elvtra. The sec- 
ond and third joints are short and equal, and together about 
as long as the fourth. The remaining joints of the antennae are 
of nearly equal length. The first and second joints are nearly 
smooth, the remainder pubescent. The eyes are black, the head 
and first joint of the antennae are pale brown or green or 
brownish green, and the rest of the antennae, the labrum, and 
mouth parts brown. 
The thorax is not as wide as the elytra, and is strongly nar¬ 
rowed behind the middle, making the margin sinuate. The an¬ 
terior angles are rounded and the posterior obtuse. The sides 
of the thorax are narrowly expanded and recurved, leaving a 
gutter-like margin along the whole length. It is not margined 
behind. The disk is very slightly pubescent, and sparsely and 
faintly punctured, most distinctly posteriorly. A little behind 
the middle, upon each side of the median line, is a large conical 
fovea, but there is no median ridge or groove. A strong, erect 
hair occurs in front of the posterior angle, and another behind 
the anterior, and two or three short hairs follow the latter. 
The ehTra are coarsely and irregularly punctured, and spar¬ 
ingly pubescent, with short stiff hairs. The surface is diversified 
by four or five obscure and irregular ribs, of which the outer¬ 
most is largest, and forms a w T ell-marked longitudinal ar^le. 
