1026 LIST OF HOMOPTEROUS INSECTS. 



250. Aphis derelicta. 



Aphis derelicta, Walk. Zool. vii. App, 1. 



Distance between the first and second veins more than twice 

 farther at the tips than at the base ; thivd vein a little nearer to the 

 second at the base than at the tip, nearer to the second at the base 

 than the second is to the first ; first fork much nearer to the second 

 fork than to the third vein, not nearer to the third vein than the 

 third is to the second ; second fork sometimes nearer to the fourth 

 vein than to the first fork ; fourth vein curved near the base, almost 

 straight towards the tip, much nearer to the second fork than to the 

 tip of the rib- vein. 



a — e. England. Presented by F. Walker, Esq. 



251. Aphis Euphrasia. 



Aphis Euphrasia?, Zool. vii. App. li. 



a. England. Presented by F. Walker, Esq. 



252. Aphis tincta. 



Aphis tincta, Walk. Zool. vii. App. li. 

 England. 



253. Aphis pr^eterita. 



Aphis praeterita, Walk. Zool. vii. App. Hi. 

 England. 



254. Aphis pollinosa. 



Aphis pollinosa, Walk. Zool. vii. App. lii. 

 England. 



255. Aphts despecta. 



Aphis despecta, Walk. Zool. vii. App. liii. 

 England. 



