147 
quite prominent, somewhat distant from the costa, curving slightly in¬ 
ward or backward where the two branch veins arise. Antennae short 
reaching but slightly beyond the end of the thorax; third joint longest, 
nearly equal to the fourth and fifth; fourth slightly shorter than the 
sixth; sixth with a small spurs at the tip. Posterior wings with two 
discoidal veins which arise from the same point. Color of winged 
specimen after long immersion in alcohol; head dark, prothorax pale, 
thoracic lobes dark; abdomen pale dull yellow, with marginal sutures 
dark in some specimens; wings transparent, with a slight tinge of 
milky white; veins very delicate, and generally pale. Length of body 
about .07 inch. 
Wingless specimen .— Very broadly ovate, length, in some scarcely 
exceeding the widest point; antennae very shoit; eyes quite small; 
dark. 
Dr. Bundy, from whom the specimens were obtained, furnishes the fol¬ 
lowing note in reference to them; made at the time they were dis¬ 
covered. 
“On ash, June, Sauk City, Wisconsin. On the under of surface of 
much deformed, crumpled leaves. Female; abdomen dirty green, 
somewhat darker at the base, sprinkled with mealy-white grains at 
the apex; head, throax, eyes, antennae and legs dingy black; wings 
pale, unmarked.” The particular species of Ash (Fraxinus), which "it 
inhabits Dr. Bundy has not informed me. 
This can scarcely be the Aphis fraxini of Fabricius, which is found 
on the branches of the European ash, (Fraxinus excelsioris). It resem¬ 
bles in some respect, the Prociphilus bumelice , Schrank, to which Koch, 
with a mark of doubt, refers A, fraxini Fab., but, judging from 
Koch’s figures, it differs from that species as follows: in Schrank’s 
species, the third discoidal vein does not arise from the second*, nor 
does the second approximate very closely at its base to the first, and 
moreover it is a very large species. The two agree somewhate closely 
in color and markings, in the obliquity of the third discoidal vein, 
form of the stigma and curveture of the subcostal vein, and also in 
the form of the apterous specimens. It is also more than- probable 
that the alcohol has caused the specimens described to shrink and 
lessen the size. If it should hereafter be ascertained that this species 
is from the European ash it will be best to suppress my specific name 
and consider it as a varity of Pociphilus bumelice. 
Since the above was written, Prof. Bundy has furnished the follow¬ 
ing item; “Found on F. quaclrangulata , Mx. Leaves much twisted 
and deformed, especially at the end of infested twigs, but no gall 
proper.” 
Pemphigus rubi. n. sp. 
^ This species, which was first discovered by Prof. Gr. H. French, at 
Carbondale, Illinois, in April, 1878, and mounted and described (in Jfss) 
by Miss Nettie Middleton, presents some difficulties when we attempt 
to discover its affinity or locate it strictly according to characters and 
habits. It is possible that in a rigid classification it would require the 
