BULLETIN 



OF THE 



Illinois Qtate I aboratory 



OF 



NATURAL HISTORY, 



Urbana, Illinois. 



VOLUME V. 



ARTICLE VII.— FIRST SUPPLEMENT TO THE CHECK-LIST 



OF THE COCCI DM. ■ 



BY T. D. A. COCKERELL. 



Illinois State Laboratory of Natural History, 



IKP.ANA, ILLINOIS. 



January, 1899. 



