1034 LIST OF HOMOPTEROUS INSECTS. 



fourth joint about lialf the length of the third ; fifth a little shorter 

 than the fourth ; sixth shorter than the fifth ; seventh slender, almost 

 as long as the fourth, fifth, and sixth : nectaries about one-twentieth 

 of the length of the body : legs short. 



The viviparous winged female. More slender than the wingless 

 insect, almost elliptical : feelers more than half the length of the 

 body : disk of the chest dark : nectaries about one-fifteenth of the 

 length of the body : legs moderately long ; feet and tips of the thighs 

 and of the shanks brownish : wings colourless ; distance between 

 the first and second veins more than twice farther at the tips than at 

 the base ; third a little nearer to the second at the base than at the 

 tip, a little nearer to the second at the base than the second is to the 

 first; first fork a little nearer to the second fork than to the third 

 vein, a little nearer to the third vein than the third is to the second ; 

 second fork as near to the fourth vein as to the first fork ; fourth 

 curved near the base, almost straight towards the tip, very much 

 nearer to the second fork than to the tip of the rib-vein. In July, 

 on the roots of the parsnip, occasionally at the depth of one foot be- 

 neath the surface, whereto it crawls when the wings are about to be 

 developed. Length of the body 1 line ; of the wings 2f lines. 



a — r. England. (In Canada Balsam). From Mr. Walker's collec- 

 tion. 



297. Aphis teretcola. 



Aphis terricola, Rondani, Nuovi Annali delle Scienze Naturali di 

 Bologna, Novembre, 1847. 



Italy. 



298. Aphis insita. 



Viridi-rvfa, ovata aut elliptica, convexa, disco nigra : pedes gra- 

 ciles,femoribus tibiisque apice tarsisque nigris ; alis limpidis. 



The viviparous wingless female. Oval, plump, shining, dull 

 greenish red, with a black disk : front hardly convex : feelers much 

 shorter than the body ; fourth joint more than half the length of the 

 third; fiith much shorter than the fourth; sixth shorter than the 

 fifth ; seventh a little longer than the fifth and the sixth : nectaries 

 about one-eighth of the length of the body: legs of moderate 



