xxxiv Mr. F. Walker's 



Aphides on the Lime (Tilia rubra). 

 Aphis adducta. 



The wingless oviparous female. — The body is small, oval, convex, black : the an- 

 tennae are white with black tips, and shorter than the body : the tubes are about one- 

 twelfth of the length of the body : the four anterior legs are white, excepting the 

 knees, the tarsi and the tips of the tibiae, which, like the hind legs, are black. It lays 

 its eggs on the lime-twigs at the end of October. 



The winged male ? — The body is black : the borders of the fore chest, the fore 

 breast and the abdomen are yellowish brown ; the latter has a black stripe : the thighs 

 are yellow at the base ; the shanks are very dark yellow with black tips. 



Found with the preceding. 



Aphides on the Sweet Pea (Lathy rus odoratus). 

 Aphis dissita. 



The winged viviparous female. — Of this very distinct species I have only seen one 

 specimen, which has the appearance of a male ; but it was found in the beginning of 

 May. The body is black and shining : the antennae are slender and nearly as long 

 as the body : the rostrum is black and does not reach the middle coxae : the tubes are 

 as long as one-twelfth of the body : the legs , are dark brown or nearly black : the 

 thighs are dull yellow towards the base : the wings are gray and twice the length of 

 the body ; the squainulae are dull yellow ; the stigmata and the veins are dark gray. 



Aphides on the Bush Vetch (Vicia Sepium). 

 Aphis tribulis. 



The wingless viviparous female. — The body is black, oval, convex, and of mode- 

 rate size : the antennae are black and a little longer than the body ; the third joint is 

 pale yellow at the base : the abdomen has a rim on each side and two rows of tuber- 

 cles on the back : the tubes are as long as one-fifth of the body : the tip of the abdo- 

 minal tube is yellow : the legs are long. The young ones are linear, with pale and 

 half-pellucid limbs. 



Found in the autumn. 



Aphides on the Common Vetch (Vicia Sativa). 



Aphis Rumicis ? 



The winged viviparous female. — The body is black and small : the borders of the 

 prothorax are green : the abdomen is dark green : the antennae are black and shorter 

 than the body : the rostrum is dull yellow with a black tip : the tubes are black and 

 about one-eighth of the length of the body : the legs are yellow ; the hind thighs ex- 

 cepting the base, the tarsi, and the tips of the other thighs and of the tibiae, are black : 

 the wings are colourless; the Bquamulffi and the costal veins are pale yellow; the 



