48 Mr. J. Alder on the Animal of Kellia rubra. 
The viviparous winged female. While a pupa it much resembles 
the wingless female in colour, but is comparatively flat ; when the 
wings are unfolded it is dark brownish green, and very often 
slightly covered with white powder: the abdomen is pale green 
with a very slight pearly tint on its disc; it has also a black line 
across each segment, and a row of black spots on each side: the 
feelers are black, and a little shorter than the body ; the third 
joint is long and thick ; the fourth is less than half the length of 
the third; the fifth is a little shorter than the fourth; the sixth 
is shorter than the fifth ; the seventh is about twice the length 
of the fifth : the eyes are dark brown: the mouth is dull yellow 
with a brown tip: the nectaries are black, and as long as one- 
twelfth of the body: the legs are black ; the thighs are pale green 
towards the base: the wings are colourless, and very much longer 
than the body ; the wing-ribs are pale yellow; the wing-brands 
are very pale brown, and their tips are very slightly clouded ; the 
second vein diverges more from the first than it does from the 
third vein ; the forks of the latter usually begin respectively before 
one-third and before two-thirds of the length of the vein; the 
fourth vei is curved moderately and equally throughout its 
length ; the angle of the brand whence it springs is distinct. 
Ist var. Greenish yellow varied with brown. 
2nd var. The feelers are as long as the body. 
3rd var. The mouth is green with a black tip : the thighs are 
wholly black. 
4th var. The thighs and the middle shanks excepting the tips 
are pale yellow. 
Length of the body 1 line; of the wings 3 lines. 
Most of the winged race die during the growth of their pro- 
geny, and adhere to the leaf at a short distance from the groups of 
the wingless insects. This species feeds also on Brassica Rapa, B. 
campestris, B. Napus, Sinapis arvensis, S. alba, S. nigra, Crambe 
maritima (on this plant, especially in a wild state, it occurs 
in great profusion), Raphanus sativus, R. Raphanistrum, Capsella 
Bursa, Diplotaxis tenuifolia, Lepidium sativum, Thalictrum minus, 
Spinacia oleracea. 
[To be continued. ] 
VIII.—On the Animal of Kellia rubra. 
By Josuua Axper, Esq. 
To Richard Taylor, Esq. 
Dear Sir, Newcastle-upon-Tyne, 18th June 1849. 
My remarks on the animal of HKellia rubra have unfortunately 
brought me into a controversy with Mr. Clark, a gentleman with 
whom it would have given me much greater pleasure to have 
