46 Mr. F. Walker's Descriptions of Aphides. 



is much longer than the sixth : the front is convex : the nectaries 

 do not rise above the surface of the abdomen : the legs are yel- 

 low, and rather short j the feet and the tips of the shanks are 

 black ; the latter are straight. 



The viviparous winged female. In colour like the wingless fe- 

 male, but the head and the disc of the chest are brown : the 

 feelers are black, and as long as the body : the wings are colour- 

 less, rather long and narrow; the veins and the wing-brands 

 are brown ; the wing-vein begins to widen into the brand just 

 after half the length of the wing ; the brand is long and narrow, 

 and the angle at its tip is very obtuse ; the first and the second 

 veins are nearly straight, remote at their source, but near each 

 other at their tips ; the third vein is obsolete at its source, and is 

 forked after one-third and again after two-thirds of its length ; 

 the fourth vein is very slightly curved. 



Length of the body 1^ line ; of the wings 3f lines. 



Found by Mr. Haliday on rushes in the autumn, near Belfast. 



Fifteenth Group. 

 30. Aphis Eriophori, n. s. 



The viviparous wingless female. The body is elliptical, rather 

 narrow, slightly convex, dark lead-colour, somewhat hairy, and 

 has a spot of white floccus at the tip of the abdomen : the feelers 

 are setaceous, and less than half the length of the body ; the 

 fourth joint is full half the length of the third ; the fifth is rather 

 shorter .than the fourth ; the sixth is more than half the length 

 of the fifth ; the seventh is much more slender than the preceding 

 joints, and rather longer than the fifth and the sixth : the eyes 

 are tuberculate behind : the mouth reaches the middle hips : the 

 front is nearly straight, slightly notched, and beset with short 

 bristles : the sides of the fore-chest are slightly undulated : the 

 nectaries are nearly one-seventh of the length of the body : the 

 abdominal segments behind the nectaries are very short : the legs 

 are slender, slightly hairy, and rather short ; the shanks are 

 straight. 



Length of the body 1^ line. 



The young ones are paler, and their mouths reach beyond 

 the hind-hips. 



i( Abundant on Eriophorum vaginatum, hareVtail cotton-grass, 

 in a pool near the pass in Wicklow called ' Sally Gap/ 1600- 

 1700 feet high/' Aug. 16th, 1847, Mr. Haliday. 



Sixteenth Group. 

 31. Aphis bufo, Haliday MSS. 

 The viviparous wingless female. Found in the beginning of Oc- 



