This as admitted by Prof. Riley is very closely allied to Schizon- 
eura ulmi Linn, and it is doubtful whether it should be considered 
as distinct. 
Glyphina ulmicola, Fitch. 
Bursocnwta ulmicola , Fitch, 4th N. Y. Rep. 1858, p. 63 (5 diV.-Thelnxes ulmicola, 
Walrfh Proc Ent Soc. Phil. yol. i. p. 305, 1862; American Entomologist, vol. 
i p" 103, 1869 .—Oolopha ulmicolu, Monell, Canadian Entomologist, vol. ix, p. 
102,'1877. 
u Impregnated, or winter egg. —Length, 0.38mm, perfectly ovoid, shin- 
in 0, olivaceous, inclining to brown, with no particular sculpture. 
ii First generation, or stem-mother. —0.4mm long when hatched. Anten- 
n® 4-jointed; joints subequal in length and thickness, but with the 
bases of hairs rather strong. Promuscis very short, reaching only to 
middle coxa?, or a little beyond. Lpper tarsal haiis globate at tip, 
and as long as' tarsus. Smooth, dark olive brown in color, with black 
members. After first molt the beak is still relatively shorter, as also 
the tarsal hairs; the color is paler, but the members are still black. 
She measures 1mm in length when beginning to bear, and the third 
joint of antennze is then gomewhat clavate, and as long as joints one 
and two together; the fourth narrower, as long as third, and rather 
truncate at "tip, with two rather conspicuous piliferous prominences. 
Color, translucent yellowish green, often inclining to puiple. 
u Second generation. —0.4mm long when, born; nearly five times as 
long as wide; the antennse short and 5-jointed, the joints sub-equal in 
length, the third shortest and narrowest, the 5th swollen and sub-fu- 
siformi with rather strong bulbs at the base of the hairs. Promuscis 
reaching to hind coxae. Distinct globate tips to the four tarsal hairs. 
Color pale oiive green, with black members and a dusky stripe on 
the notum. Pupa with antennae smooth, 6-jointed, joints subequal in 
thickness, joint 4 only as long 2; 5 and 6 each twice as long; 3 four times 
as long. Color, dingy orange, with a paler baud around the thorax, 
embracing the wing-pads, and reminding one, on this account, of the 
pupa of Phylloxera. 
“Winged female: —Average expanse 3.7mm; the form of body more 
as in Phylloxera, the abdomen tapering and narrower than the thorax 
bearing from ten to twenty pseudova. Blackish, with an olive green 
tint, the abdomen and under surface yellowish-green in the. fresher 
individuals. Antennse reaching only to insertion of front wings, 6- 
jointed; joints, 4, 5, and 6 subequal, and together equal to 3 in length. 
[Three specimens examined have joints 4 and 5 very imperfectly separat¬ 
ed, causing the antennae to appear as 5-jointed.] Wings as described 
by Walsh, the stigma being well rounded and pale. [In three speci¬ 
mens examined, the third discoidal of the front wing, is simple and 
precisely as in Pemphigus; in one specimen, the first discoidal is 
wanting on both front wings, and in another the fork of the tnird 
discoidal is wanting on the left one.] Basal joint of tarsus rather 
short; tarsal claws only moderately strong. 
“Third generation. —The young from the winged female, after being 
freed from the pellicle in which they were born, have stout five-joint¬ 
ed antennse, the joints subequal; stout but short promuscis reaching to 
