Oit.iiht Lake Pishis 



249 



The Microscopic Food Supply. As in main part altcntixn has l»een con- 

 centrated on the macroscopic animals of the lake, a few uni)ul)lishcd notes on the 

 microscopic forms arc here recordetl. Since this i^ytcT went to press Muenchner 

 ('28, pp. 140157, Suppl. X. Y. Cons. Dept., i~th, .\nn. Rep.) has published 

 recent observations on the plant ])lankton of Oneida I-ake. Dr. (iillHrrt .M. Smith 

 visitetl Oneida I^ke .\ut,'ust .^o. 191S. and listed the followint; plankton altjae : 



I*L.\XKTOX .\l<..\e 

 "The letters following the specific names, R (rare) ami S (scarce), refer to 

 the relative abundance of the various organisms in the plankton catch and not to 

 their relation to the total volume (»f the lake." 



Chloropliyccac 

 Kirclniiriclla lunaris sss Bolryococcus Drauiiii rrr 



Dtctyosphacrium pulchcUum rrr Pal lost rum Boryniiuni rr 



S'pliacrocystis Schroctcri ss Pcdiastrtim duplex clulhraluiii rrr 



Cocyslis Dorgci rrr Codastrum n'liculaluiit rrr 



Sciitcdcsnius quadricoudu rrr Stourastrum gracUc ( ?) rr 



Triclwdesmium lacustrc ss 

 Cilocolridiiii cchinulata s 

 Microcystis aeruginosa rr 

 .huihaeiui flos-ai/uae rrr 



Myxopliyceae 



Coelosphaerium Kuelziuijianum 

 Coelospliaerium Xaei/eliaiiuni rr 

 Chroococcus liiniieticus rrr 

 .\ferisiiiofedia eletjaiis rr 



Urogleiiofsis aniericaiia rrr 



I'haeophyceae 



Dinobr\on c\liiidrieui 



livery local resident alniut the lake is familiar with the great i>eriiHlic abun- 

 dance of water "i)loom" which fills the surface waters during the summer months. 

 Ill ( ;ilbert Smith found that this was Clocotricliia cchinulata. ( Cf. '24, p. 104.) 



.Mr. Alfred .\, D.K.littlc, 

 July. i<ji'>. and maile a few collections 

 mitteil us to use, are as follows: 



.X.NiMAL Plankton 

 f Washington, I). C, visite<l < )neida I-akc during 

 His records, which he has kiiully j)cr- 



Mntomostraca 

 ( ollitted olT N..rcro» l'..n)t,july 18, U)ih. 

 No. I, .' p. m , after iH hours of northeast wind. Ti 

 a few weeds. 



water .among 



