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



a black tip : the tube at the tip of the abdomen and the nectaries 

 are white ; the latter have darker tips and are as long as one- 

 fourth of the body : the legs are greenish white ; the knees are 

 brown ; the feet and the tips of the shanks are black. 



9th var. Like the last, but the body is deep green and mottled 

 with dark colour : the feelers are black, yellow at the base : the 

 nectaries are pale yellow with dark tips : the thighs are green ; 

 the shanks are yellow, with black tips. 



10th var. The nectaries are slightly spindle-shaped. 



1 1 th var. The body is yellow : the borders of the abdomen are 

 black : the feelers are black, yellow at the base, and shorter than 

 the body: the mouth is pale yellow; its tip and the eyes are 

 black : the nectaries are yellow with black tips, and as long as 

 one-fourth of the body : the legs are pale red ; the knees, the feet, 

 and the tips of the shanks are black. Mr. Hardy, on Urtica urens. 



12th var. The body is dull green tinged with buif: the feelers 

 are pale yellow, darker towards their tips, and a little shorter 

 than the body : the eyes are dark brown : the mouth and the 

 nectaries are pale yellow with brown tips, and the latter are as 

 long as one-fourth of the body : the legs are also pale yellow ; the 

 feet and the tips of the shanks are brown. On Carduus. 



13th var. The body is small, oval, convex, pale green, not 

 shining, whitish towards the head : the feelers are pale yellow, 

 black towards the tips, and longer than the body : the mouth is 

 pale yellow ; its tip and the eyes are black : the nectaries are 

 pale yellow with black tips, and about one-fourth of the length 

 of the body : the legs are pale yellow, and rather long ; the knees, 

 the feet, and the tips of the shanks are black. An Aphis of this 

 variety has one hind-shank much longer than the other, and 

 black in the middle as well as at the end. 



14th var. The body is rose-colour mottled with pale yellow : 

 the head and the limbs are yellowish white : the feelers are longer 

 than the body ; the tips of the joints are black : the eyes are very 

 dark red : the mouth and the nectaries have black tips, and the 

 latter are about one-fifth of the length of the body : the feet are 

 black. 



15th var. The body is green, and shining. 



16th var. The body is yellow. 



17th var. The body is red. 



18th var. The body is bright red. 



19th var. The body is pale orange. 



20th var. The body is streaked with black. 



21st var. The body is nearly all black. 



These colours vary in intensity, and are either separate, or 

 mixed together on the body, which is sometimes dull, sometimes 

 shining. 



The limbs also vary in colour : the feelers are rather less or 



