( 12 ) 



Length to tip of abdomen about .05 ; to tip of the wings about .12 

 inch. 



Found in July, at Carbondale, Illinois, on the new growth of the 

 twigs or steins of young plants of C' phalanthiis occidentalis ; occasion- 

 ally on the midrib of the leaf near the base. 



It is possible that this should be placed in CalUpterui', but the honey- 

 tubes are rather long, and the antennae do not agree with characters 

 as given by Koch, which, in fact, appear to be contradictory. 



33. Aphis viburni ? Fabr., Syst. Ent., 737, 18. 



On the tender twigs of Viburnum opuhis. 

 Our species appears to be identical with the European. 

 General color lilac-brown : antennae shorter than the body ; the 

 honey-tubes short ; legs usually pale honey yellow. Illinois, June. 



34. Aphis maidis, Fitch. 



On the tassel, ear-stalks and roots of Indian corn. Green through- 

 out in apterous individuals ; winged with head and thorax shining 

 black. 



35. Aphis brassicae, Linn., Syst. Nat., II, 734. 



Aphis floris-rapae, Curt., Journ. Roy. Agr. Soc, III, 55. 

 Pale greenish-yellow. On Cabbage. 



36. Aphis impatientis, new sp. 



Winged individual. — Antennae extending about to the base of the 

 honey-tubes, pale and dusky alternately ; head black ; prothorax pale 

 brown, rest of the thorax shining black ; abdomen pale brownish ; 

 honey-tubes not reaching the tip of the abdomen, black ; tail dull yel- 

 lowish ; veins of the wings and stigma brown ; wings iridescent ■, legs 

 dusky, tibiae pale yellow. Length to tip of abdomen about .10 inch, 

 to tip of wings .18 inch. 



Apterous specimens. — Olive or purplish-brovrn. 

 Found in August, at Carbondale, Illinois, on Inipatiens fulva. 

 Is an Aphis in the restricted sense. 



37. Aphis symphoricarpi, new sp. 



Aptej'ous individuals — f No winged specimens observed). 



There appear to be two varieties, but evidently belonging to the 

 same colonies. 



One is pale, transparent green or yellowish green ; eyes black ; an- 

 tennae pale, with a black ring a little beyond the middle, tips dusky ; 

 honey-tubes and a small space around the base ochre yellow ; tarsi and 

 tip of the beak black ;. legs pale, transparent greenish. Bodies rather 



