en 



I 



DC 



ECOLOGICAL NOTES ON THE CLADOCERA AND 

 COPEPODA OF AUGUSTA, GEORGIA, WITH 



DESCRIPTIONS OF NEW OR LITTLE librarv 



KNOWN SPECIES.* 



BOTANIC A 



C. H. TUENEK. QARDBN 



This communication is but a fragment of what was 

 planned to be an exhaustive ecological study of the Clado- 

 cera and Copepoda of Augusta, Georgia. The various 

 ponds and other bodies of water were visited at regular 

 intervals, a careful record made of the temperature of the 

 water and the condition of the body of water, and a collec- 

 tion made with a Birge dredge. These collections were 

 taken to my laboratory and worked over at once. The 

 species were identified and measured and, usually, a rec- 

 ord made of other small animals that were collected at the 

 same time. When this work had been in progress for a 

 little more than one year, it was suddenly terminated be- 

 cause I then left Augusta to reside, permanently, in an- 

 other part of the country. Partly as the result of ravages 

 of mice and partly because, as the work progressed, my 

 ideas as to what measurements were essential underwent 

 a change, the records are not so complete as I would like. 

 However, since it will be impossible for me to complete 

 the work; and since so little has been published on the 

 ecology of the American entomostraca, I have thought 

 it best to publish the data that I have. 



Augusta, Georgia, is situated on the fall line separating 

 the Piedmont Plateau from the Atlantic Coastal Plain. 

 At this point, the level, sandy plain is dotted with numer- 

 ous artificial ponds. These ponds, which have been exca- 

 vated by the numerous brick-yards of the locality, vary 

 in extent from a few square yards to several acres. There 

 are also a few creeks, which empty into the Savannah 



*Presented by the title to The Academy of Science of St. Louis, 

 December 5, 1910. 



(151) 



