336 Mr. F. Walker^s Descriptions 0 / Aphides. 
angle ; it is not widened into a distinct brand, though that part 
of the wing is yellow, and clouded at the base and at the tip ; 
the branch-veins are not straight ; their tips are clouded ; the 
first vein is not so perpendicular as in Aphis Alni and other 
species ; the third vein is distinct till very near its source ; it is 
forked some way after one-third of its length, and forked again " 
long after two-thirds of its length ; the fourth vein is very di- 
stinct along its whole length. 
Length of the body | line ; of the wings lines. 
A single specimen found on the walnut near London, August 
3rd, 1847. 
11. Aphis Corylif Gotze. 
Aphis Coryliy Gotze, Ent. Beitrage, ii. 311; Sir Oswald Mosley, 
Gardener^s Chronicle, i. ; Kalt. Mon. Pflan. i. 98. 73. 
This delicate little Aphis feeds on the hazel [Corylus Avellana)^ 
on the hornbeam [Carpinus Betulus)^ and, as Kaltenbach states, 
on the ash (Fraxinus excelsior). 
The viviparous wingless female. This appears beneath the leaves 
at the end of March or later : it is then pale green, bristly, and 
rather long and narrow : there are four rows of brown spots along 
the body, and a bristle comes forth from each spot : the feelers 
are brown, and nearly one-half the length of the body : the eyes 
and the tip of the mouth are brown : the nectaries are extremely 
short : the legs are pale green. 
1st variety. The feelers and the legs are dark dull green. 
The viviparous winged female. This, while a pupa, at the end 
of April, has a citron or pale yellow colour : there are four rows 
of tubercles along the back, which is thickly covered with brown 
bristles : the eyes are red : the feelers are full half the length of 
the body ; the tips of their joints and the feet are brown. The 
wings are unfolded in the middle of May, and the insect has 
then a beautiful citron colour : the tips of the feelers, the tip of 
the mouth, the feet, and the tips of the shanks are brown : the 
feelers are as long as or a little longer than the body ; the fourth 
joint is a little shorter than the third ; the fifth is much shorter 
than the fourth ; the sixth is much shorter than the fifth ; the 
seventh is as long as the fifth : the wings are colourless ; the wing- 
ribs and the wing-brands are pale yellow, and there is a small 
brown spot on each of the latter ; the veins are also pale yellow, 
and their tips are slightly clouded : the first branch-vein is some- 
what perpendicular to the wing-rib, as in Alniy &c. The front 
is prominent : the sides of the fore-chest are notched : the legs 
are moderately long ; the fore-legs are but little shorter than the 
hind-legs : the main wing-vein does not widen into a brand ; it 
is very slightly inclined inwards and outwards, forming a very ob- 
