On Platydorina. 439 



LITERATURE CITED. 



Carter, H. J. 



'58. On Fecundation in Eudorina elegans and Cryptoglena. Ann. 

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'71. Note on a Fresh-water Species of Ceratium from the Lake of 

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Garman, H. 



'90. A preliminary Report on the Animals of the Mississippi 

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Kofoid, C. A. 



'98. Plankton Studies, II. On Pleodorina illinoisensis. a new Spe- 

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Schroder, B. 



'98. Dangeardia.ein neues Chytridineen genus auf Pandorina rnorum 

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