210 
Winged female. —Alar expanse 10mm. Head and thorax bluish-black. 
Abdomen black, covered with long cottony threads. Antennae reach¬ 
ing the wing-insertions; annulations not conspicuous; joints 3, 4, 5 and 
6 somewhat contracted at base and apex; apical unguis not perceptible; 
joints 5 and 6 subequal; 4 distinctly clavate; 3 as long as the two 
preceding together. Wings subhyaline, of a whitish tinge; subcostal 
vein and the inner margin of the stigma black; oblique veins whitish, 
stigma short and broad, not angled at the base of the stigmal vein, 
which starts from a little behind its middle, and is comparatively 
straight thereby making the apical cell rather narrow. Terminal dis¬ 
tances between the veins sub equal that between 2d discoidal and cu¬ 
bital somewhat greatest; basal one-third of the cubitus hyaline, but 
not abortive, as it can usually be traced to its base, which is very 
close to that of the second discoidal; bases of the two discoidals either 
approximate or quite contiguous; discoidals of the hind wings preced¬ 
ing connectedly from the subcostal vein. Larva with 5-jointed antennae 
and the promuscis extending beyond tip of abdomen. 
June—July; St. Louis, Mo. (Riley); Clinton, N. J. (Prof. W. D, 
Robbins).” 
Pemphigus fraxinifolii. Riley. 
“[Infesting the terminal leaves of Fraxinus americanus and F. 
sambucifolia from spring till late summer, and producing a twisted 
curl thereof; the young lice varying in color from deep glaucous to 
livid, very flocculent and exuding the liquid globules quite copiously. 
Winged females appearing early in June.] 
Winged female: Alar expanse 5.7mm. Head and thorax dusky; ab¬ 
domen dark green; antennae reaching by the length of the apical joint 
beyond costal base of front wings; inconspicuously annulated and with 
joints 3—6 but moderately narrowed at base; joint 3 as long as 4 and 
5 together; 6 (including unguis) nearly f as long again as 5, with 
the unguis distinct and of normal length. Scutellar lobes of mesono- 
tum broad and well marked. Legs normal. Wings hyaline; stigma 
linear, or not wider than subcostal space, yellowish and poorly de¬ 
fined anteriorly; veins very slender and sub-hyaline, the stigmal most 
distinct, starting a little in front of middle of stigma, and but faintly 
curved; cubital almost invisable, but not obsolete at base, where it 
nearly joins the 2d discoidal. Terminal spaces between 1st and 2d 
discoidals, and between this last and cubital, subequal; that between 
cubital and stigmal only half as great. Discoidals of hind wings pro¬ 
ceeding connectedly from sub-costal. Promuscis reaching beyond front 
coxae; abdomen with 7 rather large roundish spots each side, each 
sending out 2 hairs. [In some specimens the cubital starts independ¬ 
ently from the subcostal; in others it joins the 2d discoidal a short 
distance from base]. Pupa with the 3d joint of antennae relatively 
somewhat shorter. 
Larva of probable second generation’. Antennae smooth, 4-jointed; 
joint 3 somewhat longer than 4, and as long as 1 and 2 together: 
apical nipple l-6th as long ^ s the 4th joint. Promuscis slender, reach¬ 
ing beyond hind coxae. Legs rather long and stout. Tibiae, tarsi, and 
