201 
the apex; the mouth flaring. Antennae a little over half as long as' 
the body, the third joint the longest, the fourth and fifth subequal, 
and the sixth joint two-thirds' as long as the preceding. Seventh 
joint slender, very little longer than the proceeding. Rostrum reach¬ 
ing the third pair of coxae. Length 2.28mm; to tip of wings 4.56mm. 
On leaves of Salix alba. May—June. Peoria, Ill. (Miss E. A. Smith). 
This species comes under Claclobius Koch, a genus which does not 
seem sufficiently distinct from Chaitop homes. 
Though the shape of the nectaries is very remarkable, it seems to 
me scarcely sufficient to justify a generic separation. 
Chaitophorus quercicola. n. sp. 
Apterous individuals —Dorsum greenish, with four rows of short 
tubercles, all of which, except a few in the side-rows, are black; their 
apical circumference with from three to five bristles; the two middle 
rows of tubercles stop at the head, but the two lateral rows are con¬ 
tinued by smaller tubercles until near the base of the labrum. Ros¬ 
trum reaching the second coxae. Nectaries yellow, about as long as 
the tarsi, slightly enlarged at base, the mouth conspicuously flaring. 
Style not perceptible. 
Winged individuals. —Antennae very slightly pilose; fourth joint 
sub-equal to the fifth and two-thirds as long as the third joint; sixth 
about half as long as the preceding, and very little longer than 
the seventh. Wings, with the stigma and veins much as in Ch. pop- 
ulicola; the veins lying in narrow dusky bands. Length of apterous 
individuals 1.52—2.02mm; length of wing 2.54mm. 
On the nnder side of the leaf near the midrib. Quercus primes 
May—June. Peoria, Ill. Of this interesting species, I have seen a 
number of apterous individuals, but only a single winged specimen, 
which was mounted on a slide, kindly communicated by Miss E. A. 
Smith, of Peoria, Ill. The dorsum of the winged individual is prob¬ 
ably not tubercular, but this cannot be decided with certainty on ac¬ 
count of the manner in which the specimen is mounted. 
Though the antennae of this species are not sufficiently pilose to 
justify its being placed in Chaitophorus^ its general appearance seems 
to point to this as its rightful position. ^ \ 
In his portion of the paper named Prof. Riley describes some new 
species of Pemphigince and gives more complete descriptions of some 
which have been heretofore named, as follows: 
