1C 
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 disc is very 
slightly pubescent, and sparsely and faintly punctured, most dis¬ 
tinctly 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. f 
The elytra are coarsely and irregularly punctured, and sparingly 
pubescent, with short stiff hairs. The surface is diversified by four 
or five obscure and irregular ribs, of which the outermost is largest, 
and forms a well marked longitudinal angle. This and the one next 
it unite anteriorly in a prominent humerus. The edge of the elytron 
is recurved like that of the thorax, forming a still deeper gutter 
just within the margin. The thorax and elytra are commonly 
brownish-green or grassy-green throughout, but the humeral angles 
are occasionally touched with brown, as is likewise the smooth scu- 
tellum. The sutural line is-also sometimes brown. 
The epipleurse are green, and do not attain the tips of the elytra* 
The legs and under surface of the body are pubescent except the 
prosternum, which is smooth, or nearly so. The abdomen is sparsely 
punctured. The thighs are usually green, but the tibiae, the tarsi, 
and the sides of the metasternum are more or less deeply tinged with 
brown. 
Fig. 2. Pupa of the 
corn root-worm, JJi- 
abrotica longicornis. 
Say. Magnified 10 
diameters. 
between the eyes. 
Pupa .—The characters of the newly formed pupa 
are well shown by the accompanying figure, but 
as some changes occur previous to the escape of 
the beetle, a description of the latest stage is 
given. The length is .18 of an inch, and the 
greatest width aboht one-tenth of an inch. The 
color is pure white throughout, with the exception 
of the brownish-red eyes, which now show through 
the skin, and a pair of brown, horny, curved 
hooks, attached to the tip of the abdomen, about 
equaling in length the preceding segment. The 
arrangement of the wings, wing covers, legs and 
antennae, and the position of the head, are well S 
shown in the cut. Two white erect hairs are seen 
between the antennae, and another pair above and 
Several scattered slender spines appear upon the back of the pro¬ 
thorax, as well as an irreguiar transverse row upon each of the 
other segments of the thorax and abdomen. These hairs are espe¬ 
cially long and strong at the tip of the abdomen, and a few like¬ 
wise appear upon the tibio-femoral joints. The hairs, as well as 
the forceps-like claws, already mentioned, at the tip of the body, | 
doubtless serve to fix the pupa 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. 
