(15) 



I also give descriptions of some new species belonging to other tribes, 

 with notes on a few species heretofore described. 



Lactinvis 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 diifering 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. 



1 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 equ>jl 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. 



