292 University of California Publications in Zoology [Vol.22 



Leidy, Joseph 



1879. Fresh-water rhizopods of North America. IT. S. Geol. Surv. Terr., 12. 



Pascher, A. 



1913. Siisswasserflora Deutsehlands, Oesterreichs und der Sc.hweiz. Hefte 

 1-2, Flagellatae; Heft 3, Dinoflagellatae ; Heft 9, Zygnemales; Heft 

 10, Baeillariales. Jena, Fischer. 



Pritchard, A. 



1861. A History of the Infusoria, including the Desmidiaceae and Diato- 

 niaceae, British and foreign ; ed. 4. London. 



Reighard, J. E. 



1894. Biological examination of Lake St. Clair. Bull. Mich. Fish Comm., 

 no. 4. 



Schoenichen, W., and Kalberlah, A. 



1909. B. Eyferth's Einfachste Lebensformen des Tier-und Pflanzenreiches : 



ed. 4. Braunschweig, Goeritz. 



Stokes, Alfred C. 



1887. Microscopy for beginners. New York, Harper. 



Tilden, Josephine 



1910. Minnesota Algae. Geol. Nat. Hist. Surv. Minn., Botanical series, 8. 



United States Engineering Department 



1908. Survey of San Joaquin River, Stockton Channel, etc. House doc. 

 1124, 60 cong., 2 sess., serial no. 5435. 

 Ward, H. B. 



1897. Biological examination of Lake Michigan. Bull. Mich. Fish Comm., 



no. 6. 

 Weber, E. F. 



1898. Faune rotatorienne du bassin du Leman. Rev. Suisse Zool., 5, 263-785. 



