188 Wisconsin Academy of Sciences, Arts, and Letters, 
Alisma plantago. 
Aphis ahhreviata Patch. 
Rhopalosiphum alismae Koch. 
Siphocoryne nymphaeae Linnaeus. 
Allium sp. 
Aphis aim Lichtenstein. 
Alnus sp. V 
Aphis piinctipennis Zetterstedt. 
Chermes alni Kalm. 
Pemphigus alni Provancher. 
Alnus glutinosa. 
Aphis hifrons Walker. 
Callipterus giganteus Cholodkovsky. 
Callipterus maculata Hayden. 
Glyphina alni Schrank. 
Myzocallis alni DeGeer. 
Myzocallis coryli Goeze. 
Yacuna hetulae Kaltenbach. 
Alnus incana. 
Callipterus giganteus Cholodkovsky. 
Glyphina alni Schrank. 
Prociphilus tessellata Pitch. 
Alnus rhombifolla. 
Euceroiphis flavus Davidson. 
Euceraphis gillettei Davidson. 
Myzocallis alni DeGeer. 
Prociphilus tessellata Pitch. 
Alnus rubra. 
Myzocallis alnifoliae Pitch. 
Prociphilus tessellata Pitch. 
Alnus rugosa=A. serrulata. 
Myzocallis alnifoliae Pitch. 
Prociphilus tessellata Pitch. 
Alnus vulgaris~A. glutinosa. 
Aphis rhamni Kaltenbach. 
Alopecurus sp. 
Sipha glyceriae italica Del Guercio. 
