331 
Mr. E. Waiker^s Descriptions of Aphides. 
thick_, elliptical : the front is slightly convex and very broad, and 
there are no spines between the feelers : the feelers are black, 
stout, and much longer than the body ; the first and the second 
joints are thick and dark brown ; the third is rather short ; the 
fourth is as long as the third ; the fifth is a little longer than the 
fourth; the sixth is about half the length of the fifth ; the seventh 
is as long as the third, fourth and fifth together : the legs are stout 
and very short ; the shanks are longer than the thighs. In 
other characters it resembles the winged female. Found in 
August. 
Length of the body 1 line. 
The winged male. Scarlet : like the winged female hut smaller, 
and having a rather narrow front : the eyes also are more promi- 
nent than those of the female : the mouth has a black tip, and 
reaches the base of the middle legs ; the lobes of the chest, the 
breast, and the sexual parts are brown. In one insect the second 
fork of the third branch-vein in one wing is twice the length of 
that in the other wing. 
Length of the body I^ line ; of the wings 3 lines. 
Sixth Group. 
Containing only one species, and represented by four forms, 
which are — the winged viviparous female, the wingless oviparous 
female, the wingless male, and the winged male. 
8. Aphis Tiliw, Linn. 
Aphis Tiliw, Linn. Syst. Nat. ii. 734. II ; Faun. Suec. 984; 
Fabr. Sp. Ins. ii. 388. 34; Ent. Syst. iv. 218. 39; Syst. Ehyn. 
299. 39 ; Leeuwenh. Lettr. 1696, 293, 294; Frisch. Ins. xi. I. 
3. t. 17; Geoff. Ins. hi. I. 495. 6; DeGeer, Ins. hi. 77. 12. 
t. 5. f. 1-6 ; Schrank, Faun. Boic. ii. I. II7 ; Latr. Gen. hi. 173 ; 
Burm. Handb. Ent. ii. 95. 5 ; Curtis, Brit. Ent. 577; St. Farg. 
et Serv. Enc. Meth. x. 247 ; Fonscol. Ann. Soc. Ent. x. 182. 25 ; 
Sir Oswald Mosley, Gardener^s Chronicle, i. 684; Kalt. Mon.Pflan. 
i. 129. 99 ; Ratz. Forst. Ins. hi. 219. 
This pretty Aphis feeds on Tilia ruhra, the common lime-tree ; 
T. platyphylla, the broad-leaved lime ; and on T. americanaj the 
American lime. 
The viviparous winged female. Is hatched from the egg in the 
middle of April, or rather later in the year : it is then nearly 
oval, rather flat, and of a bright lemon colour : the feelers are 
about half the length of the body ; the tip of each of their joints 
and the tip of the mouth are brown : the eyes are dark red : 
the nectaries are extremely short. The wings are unfolded in 
the beginning of June, and for a while after this operation the 
body is pale yellow, and the wings are milk-white and spotless : 
