INVERTEBRATES 
Bryozoa. 
Davenport, C. B. Report on the fresh-water Bryo- 
zoa of the United States. Proc. U. S. N. 
Mus., Vol. XXVIT, p. 211. 1904. 
Kraepelin, K. Die Deutschen Susswasser-Bryozoen. 
Abh. Natur. Ver. Hamburg, Bd. XVIII. 
1887. 
Rotifera. 
Jennings, H. 8S. Rotatoria of the United States, 
with special reference to those of the Great 
Lakes. Bull. U. S. Fish Comm., Vol. XTX, 
p. 67. 1901. 
Nematelminthes. 
Montgomery, T. H. The Gordiacea of certain 
American collections, with particular refer- 
ence to the North American Fauna. Bull. 
Mus. Comp. Zool. Harv., Vol. XXXII, p. 23. 
1898. 
Porifera. 
Potts, E. Contributions towards a synopsis of the 
American Forms of fresh-water Sponges, ete. 
Proc. Ac. Nat. Se. Philad., Vol. XX XIX, p. 
158. 1887. 
; Protozoa. 
Kent, W. Saville. A Manual of the Infusoria. 
Vols. I-III. London, 1880-1883. 
Cash, J. The British Freshwater Rhizopoda and 
Heliozoa. Vols. I & ID. 1905 & 1908. 
Published by the Ray Society. 
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