394 The Ohio Naturalist. [Vol. VJ, No. i, 



BRUSH LAKE PROTOZOA. 



LU.MINA (". RlDDI.K. 



During the Fall of 1902 the writer studied and listed the 

 Algae found at Brush Lake, Champaign Co., Ohio, and the list 

 was published in Ohio Nat. 5:208; at the same time a careful 

 record was kept of the Protozoa found in the same material and 

 was reported at the 1903 meeting of the Ohio Academy of Sci- 

 ence bv Professor F. L. Landacre as the writer was at that time 

 located in the West. Delay in publication has been due to the 

 writer's anxietv for accuracy in nomenclature and citations. As 

 far as has been possible the names have been arranged after 

 Rutschli's system, taking the classification from Calkins' "Pro- 

 tozoa" and Blochman's "Die Mikroskopische Thierwelt des 

 Suesswassers." 



My grateful acknowledgments are due to Professor Land- 

 acre, and to Professor L. B. Walton of Kenyon College, for the 

 use of literature in revising the list. 



I RHIZOPODA 



Fam. Atnocbidae. 

 Amoeba proteus L. Dact^iosphac'riunl radinsuin Klnii;,'. 



Amoeba villosa Wall. 



Fam. Arccllidac. 



Arcella dentata Ehrbg. ' Difflugia iirceolala Carl. 



Arcella vulgaris Ehrbg. Centropyxis aculeata Ehrl)g. 



Difflugia corona Wall. 



Actinophrys sol Ehrbg. 



HELIOZOA. 



Fam. A pJirotkoracidae. 



WASTIGOPHORA. 



Fam. Hcteromonadidac. 

 Anthophysa vegetans(().F.M.) S.K. Spumclla vivi])ara f"]irl)g. 



Fam. Euglciiidac. 

 Euglena oxyuris vSchmarda. Phacus jnTum (I-^hrl)g) ,S. K. 



P2uglena spirogyra Ehrbg. Phacus lri<|ucKT IClirbg. 



Euglena viridis Ehrbg. 



Fam. Astasidac. 

 .Astasia trichophora (Ehrbg) C'la]i. 



l"am. /'crani'uiidac. 

 EnLosiphcju o\-atus Stokes. 



Fam. I'cridinidac. 



IV'ridinium tabulatiini lihrbg. 



INFUSORIA. 



Pam. /''nrlirliiu'dac. 

 PseU(lopn)ro(l(m ni\'eus f^hrbg. Arachnidium glubosuni S. \\. 



Coleps hirtus (). F. M. Didinium nasutuni () V .M . 



Coleps uncinatus C & L. 



