nf fflatnr. 



ORONO 



BULLETIN No. 182. 



JUNE 1910 



FOUR RARE APHID GENERA FROM MAINE 



CONTEXTS 



Sipha glyceriae 



Mindarus abietinus . . . 

 Symdobius oblongus. . 

 Mastopoda pteridis. . . 

 Explanation of Plates 



PAGE 



241 



242 



244 

 246 



247 



