Insects. 2249 



also black and nearly one-fourth of the length of the body : the legs are dark green 

 and of moderate length. The young ones are like their mothers, but more dull, flat 

 and linear ; their colour, when very young, is dark green. 



Near London, in the spring; it disappears soon after the beginning of summer. 



Aphides on the Meadow Flea-wort (Pulicaria dysenterica). 

 Aphis Rumicis. 



The winged viviparous female. While a pupa it is of moderate size, elliptical, 

 black, dull, with a row of white spots on each side of the abdomen : the under-side of 

 the thorax is covered with a white bloom : the antennae are black, dirty white towards 

 the base, and as long as the body : the tubes are as long as one-eighth of the body : 

 the legs are dull white ; the tarsi, the knees and the tips of the tibiae are black : the 

 rudimentary wings are dark green. 



Near Lancaster, in September. 



Aphides on the Knot Grass (Polygonum aviculare). 

 Aphis Polygoni. 



The wingless oviparous female. Sluggish, small, dull brown, brownish yellow on 

 each side, fusiform, granulated, narrow, rather flat : the front of the head is notched : 

 the antennae are pale yellow, brown at the base, black towards the tips, and nearly 

 one-fourth of the length of the body ; the first and the second joints are brown ; the 

 third and the fourth are white ; the seventh is fully as long as the sixth : the rostrum 

 is pale yellow ; its tip and the eyes are black : the abdomen is shorter than the tho- 

 rax, which is much developed; the legs are short and pale yellow; the tips of the 

 tarsi are black ; the hind tibiae are brown. 



The wingless male. It is smaller and more depressed than the female; the anten- 

 nae are black and about half the length of the body. 



Found near Newcastle, in the beginning of October, by Mr. Hardy, to whom I 

 am much indebted for his kindness in forwarding me a great variety of Aphides, with 

 notes of their habits in relation to the plants whereon they feed. 



Aphides on the Plum (Prunus domestica). 

 Aphis similis. 



The wingless viviparous female. The body is grass-green, with a darker green line 

 down the back, elliptical, convex, not shining : the antennae are pale green, brown to- 

 wards the tips, and nearly one-fourth of the length of the body : the rostrum is pale 

 green ; its tip and the eyes are brown : the tubes are also pale green, with brown tips, 

 and about one-twentieth of the length of the body : the legs are short and pale green ; 

 the tarsi are brown. 



Towards the end of April. 



