APHIDID^E OF THE EXPEDITION 



BY THEO. PERGAHDE 



THIS paper is based upon a small collection of plant lice ob- 

 tained in Alaska by Professor Trevor Kincaid during the Har- 

 riman Expedition in 1899. 



The material thus brought together comprises four species, 

 one of them European, while the remaining three appear to be 

 new ; at least I failed to identify them with any of our described 

 forms. It is greatly to be regretted that the migratory female 

 was obtained with only two of them, that no colorational notes 

 were made of the living insects before immersion in alcohol, 

 and that no attempt was made to ascertain the name of the host 

 plants on which they were feeding. The descriptions of the 

 new species will therefore be rather defective and incomplete, 

 though I hope they will enable future students to recognize 

 them. 



NECTAROPHORA CAUDATA sp. nov. 



Winged viviparous female : general color apparently green or yel- 

 lowish green. Antennas black ; the two basal joints dusky, their base 

 and base of the third pale. Eyes brown. The head, a somewhat 

 lunate spot at the posterior margin of the prothorax, the mesothoracic 



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