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I also give descriptions of some new species belonging to other tribes, 
with notes on a few species heretofore described. 
Lachnus quercifoliae ? Fitch. 
The following is a description of what I presume to be Dr. Fitch’s 
L. quercifoliae. 
Apterous individuals . — (apparently hardly full-grown). 
Antennae longer than the body ; third joint longest, the second 
about four-fifths the length of the third, thence decreasing regularly to 
the sixth, which is divided into two parts differing in diameter, or there 
is a seventh which is not more than half of the length of the sixth ; 
sparsely covered with hairs placed alternately. Honey tubes very 
short, the diameter exceeding the length, snowy white; tail short, semi- 
circular ; body slightly hairy. General color brown ; head paler and 
yellowish ; first two pairs of legs transparent white ; hind legs brown, 
except the tarsi, which are pale. Beak whitish, and reaching slightly 
beyond the third coxae. The young are yellowish white, with pale- 
brown patches ; as they increase in age, they grow darker, assuming a 
tortoise-shell appearance; the middle of the back and a spot each side 
of the abdomen at the shoulders pale. The older specimens show a 
distinct ridge along each side of the abdomen. Segments of the abdo 
'men very distinctly marked. Nearly oval in form; length less than 
one-tenth of an inch. Tibiae hairy. 
Found on the upper suiface of the leaves of the White Oak, at Car- 
bondale, Illinois, in August. 
I have some doubt in reference to the position assigned this species 
by Dr. Fitch, if indeed it be his species. 
Rhizobius eleusinis, new sp. 
The body very broadly ovate and very convex, almost globular ; the 
abdomen abruptly rounded behind, the last segment small and conical, 
appearing in the older or completely grown specimens as a short tail ; 
tapering regularly from the middle of the abdomen forward to the 
head, the thorax and thoracic segments distinguished only by the deeper 
sutures and position. Eyes very minute, almost obsolete. Antennae 
very short, not reaching beyond the thorax, six-jointed, first and sec- 
ond thickest, rest cylindrical, of equal thickness ; third longest^ sixth 
next, fourth and fifth equal in length ; slightly hairy ( under strong 
magnifier) especially the sixth joint. Beak reaching fully to the hind 
coxae. General and almost entire color a milky white ; apical half of 
the antennae and tip of the beak dusky or black ; the older specimens 
have two or three transverse fuscous bands on the thorax and posterior 
part of the abdomen. The under side often presents, on the lateral 
margins, abbreviated, transverse, brownish stripes, but the middle part 
is smooth and white. The legs are dirty white, more or less 
touched with pale brown. 
