236 Proceedings of Indiana Academy of Science. 
NOTES ON CERTAIN PROTOZOA AND OTHER INVERTEBRATES OF 
LAKE MAXINKUCKEE. 
By BARTON WARREN EVERMANN, 
Director, Museum, California Academy of Sciences, 
and 
HOWARD WALTON CLARK, 
Scientific Assistant, U.S. Bureau of Fisheries Biological Station, 
Fairport, Iowa. 
The field work upon which these notes are based was carried on 
under the auspices of the United States Bureau of Fisheries, at irregu- 
lar intervals between July, 1899, and October, 1913, in connection with 
a physical and biological survey of Lake Maxinkuckee, Indiana. 
THE PROTOZOANS AND CGSLENTERATES. 
No special attention was paid to the Protozoa of the lake; only those 
forms were noted which thrust themselves upon the attention. 
The protozoan life of the lake is not conspicuous except for a few 
forms which are found in such abundance as to attract attention. 
The list of species identified is a short one, not because these organ- 
isms are rare at the lake, but because no one of the party engaged in 
the study of the lake was especially interested in or familiar with them. 
An attempt was made to collect and preserve all forms that attracted 
the attention, but these were naturally only a small proportion of the 
species present. Whenever time from our other multifarious and more 
pressing duties permitted, attempts were made to collect these organ- 
isms, and at one time, stimulated by the handsome figures of some of 
the more ornate forms figured by Leidy and Kent, an especial attempt 
was made to obtain some of the more striking forms, but the search 
was rather fruitless. It so happened that the plankton, which should 
have contained a number of these organisms, was submitted to two 
different experts, one interested in Algew, the other in Crustacea, with 
the result that such Protozoa as there were went by default. 
Forms of doubtful affinity, by some placed among Alge and by others 
as animals, such as Peridinium, Ceratium and Volvox, are included, 
Volvox especially exhibiting characters which strongly suggest a position 
in the animal series. 
Following are our notes upon the few species identified: 
