8l4 CONNECTICUT EXPERIMENT STATION REPORT, I9O7-I908. 



The most promising lines of treatment are as follows : 



Spray the leaves from beneath with kerosene emulsion. 



Cover the vines with boxes or tubs, and fumigate with carbon 

 disulphide or hydrocyanic acid gas. 



Dust with insect powder or tobacco dust applied by means of 

 a powder gun. Place tobacco stems on the ground around .the 

 plants. 



tut. 



Fig. 17. The melon aphis : a, winged female ; aa, enlarged antenna 

 of same; ab, dark form, side view ; b, young nymph ; c, last stage of 

 nymph ; d, wingl^s female. All greatly enlarged. (After Chittenden, 

 Circular 80, Bureau of Entomology, U. S. Department of Agriculture.) 



The Squash Aphis. 

 Nectarophora cucurbita Middleton. 



This is a light green species, larger than the melon aphis. It 

 is found chiefly on squashes and pumpkins, though not as a rule 

 causing much damage. The same treatment advised for the melon 

 aphis may be used against this species. 



