Mr. F. Walker's Descriptions of Aphides. 47 



tober by the sea-shore near Fleetwood on Lycopsis arvensis, the 

 small bugloss ; also by Mr. Hardy near Newcastle on Carex are- 

 naria, sand reed, and by Mr. Haliday near Belfast. While very 

 young the body is pale green, but most of the abdomen is red : 

 the feelers are pale green, and nearly as long as the body ; the 

 tips of the joints are black : the mouth is reddish green, and 

 reaches the base of the hind-legs ; its tip and the eyes are black : 

 the legs are red, stout, and rather short. When full-grown the 

 body is oval, broad, tuberculate, hairy, and yellow : there are two 

 rows of larger tubercles along the back : the tip of the abdomen 

 is black : the feelers are black, setaceous, and a little more than 

 half the length of the body ; the third joint is yellow : the eyes 

 are black, and each of them being quite divided seems to be 

 double : the mouth is yellow with a brown tip, and does not 

 reach the middle-hips : the legs are short, black, bristly, and re- 

 markably stout, especially the fore-thighs and the middle-thighs 

 and the hind-shanks ; the fore-shanks and the middle-shanks are 

 yellow, darker towards the base, and the middle-shanks are also 

 darker towards their tips : the nectaries hardly rise above the sur- 

 face of the body. The eggs of this species are spindle-shaped, 

 dark green, and thickly covered with white powder; they are 

 fastened along the blades of the leaves, which when dead col- 

 lapse, and preserve them from injury. 



The wingless male. The body is yellow with two longitudinal 

 stripes and with black tubercles : the feelers are longer than the 

 body ; the legs are more slender than those of the female ; the 

 thighs are yellow with black tips. 



Seventeenth Group. 



Containing only one species which is wingless in all its forms, 

 and recedes very far from the ordinary characters of the genus. 



32. Aphis se7'rulatus. 



Ather'oides serrulatus, Haliday, Ann. Nat. Hist. 1839, 189. 



The viviparous female. Is dark brown or pale brown above, pale 

 red or pale yellow or yellowish green beneath, convex, linear, very 

 long and narrow, somewhat dull and finely rugulose : the front 

 of the head is bristly : the fore-chest and the middle-chest are 

 rather large; the hind-chest is shorter; the propodeon is still 

 shorter ; the podeon is as long as the propodeon ; the octoon and 

 the following segments are of equal and moderate size ; the telum 

 is bristly : the feelers are slightly setaceous, pale yellow at the 

 base, darker at the tips, and about one-sixth or one-eighth of the 

 length of the body : the eyes are black : the mouth is pale yellow 

 or yellowish green and reaches the middle-hips ; its tip is black : 



