210 Maine Agricultural Experiment Station. 1919. 



and July, 191 8, by Mr. George Blodget. The winged forms 

 have not been found. 



Type in collection of Maine Agricultural Experiment Sta- 

 tion, No. 109-18. 



MACROSIPHUM PTERICOLENS N. SP. 



Alate viviparous female : general body color fern green, 

 points dark ; both margins of frontal tubercles produced ; com- 

 parative length of antennal segments III to VI indicated by 16, 

 14, 12, 3+17; HI with about 50 small, distinct circular sensoria 

 reaching the entire length of segment, IV with no sensoria; 

 cornicle usually shorter than IV and longer than V and with 

 the distal area of reticulation not more than one-sixth its length ; 

 cauda about one-third as long as cornicle ; wings with veins 

 slender but clear cut and definite, second branch of M rather 

 long. 



This species was collected at Orono from fronds of bracken 

 fern, Pteris aquilina, July 3, 1913 (79-13) ; and from lady fern, 

 Athyrium filix-foemina (180-18). 



Type in the collection of Maine Agricultural Experiment 

 Station, No. 79-113. 



MACROSIPHUM DIERVILLAE N. SP. 



Apterous viviparous female : general color milk-white with 

 water-white cornicles. Comparative length of antennal seg- 

 ments III to VI indicated by 60, 58, 52, 17, 90, III with one to 

 few sensoria ; hind tarsus less than one-half base of VI ; cor- 

 nicle slender with graceful constriction near tip, about the 

 length of III and with about the distal one-ninth with faint 

 though definite reticulations. 



This species was collected at Orono from wild bush honey- 

 suckle (Diervilla lonicera Mill.) by William C. Woods July 7 

 and July 21, 1915 (Nos. 65-15 and 84-15). 



Type in collection of Maine Agricultural Experiment Sta- 

 tion, No. 65-15. 



MACROSIPHUM IMPATIENSICOLENS N. SP. 



Alate viviparous female : general body color dark bronzy 

 brown with black cornicles and whitish green or creamy cauda. 



