230 KANSAS UNIVERSITY SCIENCE BULLETIN. 



1901. Chittenden, F. H. Div. Ent. U. S. Dept. Agric, 

 Circular No. 43, Second Series, pp. 1-8. 



1901. Sanderson, E. Dwight. Can. Ent., 33, pp. 31-39, 

 64-74. 



1901. Sanderson, E. Dwight. Thirteenth Ann, Rept. 

 Delaware College Exp. Sta., pp. 127-165. 



1901. Sanderson, E. Dwight. Can. Ent., 33, pp. 31-39. 



1902. Pergande, Theodore. Bull. Div. Ent. U. S. Dept. 

 Agric, 38, New Series, pp. 7-19. 



1903. Walsh, Benj. D. First Ann. Rept. on Noxious In- 

 sects of State of 111. (second edition), pp. 73-84. 



1904. Pergande, Theodore. Bull. Div. Ent. U. S. Dept. 

 Agric, 44, pp. 5-23. 



1904. Clarke, Warren T. Bull. Cal. Exp. Sta., Berkeley, 

 No. 160, pp. 3-13. 



PLANT-HOST LIST. 



Abies nigra Michx. 



Chermes abietis L. 



abieticolens Thos. 



Lachnus abietis Fitch. 

 Acalypha virginica L. 



Aphis gossypii Glov. 

 Acer dasycarpum Ehrh. (A. saccharinum L. ) 



Aphis quercifoliae Walsh. 



Drepanosiphum acerfolii Thos. 



Lachnus longistigma Monell. 



Pemphigus acerfolii Riley, 

 stamineus Hald. 

 Acer pennsylvanicum L. 



Chaitophorus aceris L. 

 Acer platanoides Linn. 



Chaitophorus sp. Felt. 

 Acer saccarum Marsh. 



Cladobius saliciti Harris. 



Drepanosiphum acerfolii Thos. 



Pemphigus aceris Monell. 

 Acer sp. 



Cladobius'saliciti Harris. 

 Acerates angustifolia Nutt. 



Aphis asclepiadis Fitch. 

 Achyrantes sp. 



Myzus achyrantes Monell. 

 Adianthum pedatum L. 



Aphis adianthi Oestl. 



