Mr. F. Walker’s Descriptions of Aphides. 27 
having a metallic tint: the front has a tubercle in the middle 
and a smaller one on each side: the feelers are black, very often 
pale green at the base, and much shorter than the body; the first 
and the second veins are not angular ; the fourth is much shorter 
than the third; the fifth is a little shorter than the fourth ; the 
sixth is much shorter than the fifth ; the seventh is about thrice 
the length of the sixth : the mouth is dull green ; its tip and the 
eyes are black : there is a red spot, sometimes obsolete, on each 
side of the abdomen by the nectaries which are reddish yellow 
with black tips, and about one-sixth of the length of the body: 
the legs are black, moderately long, and slightly covered with a 
white bloom. The young one is comparatively pale, narrow, flat, 
and linear. 
lst var. Reddish green, mottled with black. 
2nd var. Nearly black. 
The viviparous winged female. This much resembles the pre- 
ceding form, with the exception of its darker colour, and of the 
usual difference in structure : the wings are colourless, and much 
longer than the body; the first vein hardly diverges more from 
the second than the latter does from the third; the third vein 
has its first fork after one-third, and its second still further 
beyond two-thirds of its length ; the fourth vein is more curved 
at its base than towards its tip, and the angle whence it springs 
is very slight. Length of the body 1 line ; of the wings 3 lines. 
Variation in the wing-veins. The upper division of the second 
fork is wanting. 
The glutinous matter which covers this species assumes, like 
that of Aphis Roboris, a fine red colour when mixed with Canada 
balsam. 
76. Aphis Sambuci, Linn. 
Aphis Sambuci, Linn. Syst. Nat. 1. 734.4; Faun. Suec. 998 ; 
Fabr. Syst. Ins. n. 384. 3; Ent. Syst. iv. 211. 4; Syst. Rhyn. 
294. 4; Lister, Ins. 397. 40; Geoff. Ins. 1. 495. 3; Frisch. Ins. 
un. 14. pl. 18 ; Réaum. Ins. ni. 281-350. pl. 21. fig. 5-15 ; Gmel. 
ed. Syst. Nat. i. 2202; Bonnet, Hist. Nat. 1.; Berk. Syn.i. 110; 
Stew. El. 1. 110; Turt. 11. 703 ; Schrank, Faun. Boie. nu. 1. 111. 
1202; Kalt. Mon. Pflan. i. 83. 60. 
Cinara Sambuci, Sir Oswald Mosley, Gard. Chron. 1. 827. 
Sambucifex, Amyot, Ann. Soc. Ent. Fr. 24 série, v. 477. 
The viviparous wingless female. This is oval, dull, very plump, 
and of a deep green colour: the sutures of the segments beneath 
are more distinct than those above : the feelers are slender, seta- 
ceous, almost white, and about one-third of the length of the 
body: the mouth is pale green: the eyes are dark brown: the 
nectaries are dark green, and about one-twelfth of the length of 
