1920] 



Allen: Plamkton of the San Joaquin River 



245 



1913 



9/ 6 

 9/13 

 9/20 

 9/27 

 10/ 4 

 10/11 

 10/18 

 10/26 

 11/ 1 

 11/ 8 

 11/15 

 11/22 

 11/30 

 12/ 6 

 12/14 

 12/20 

 12/27 



Table 3. — Organisms Per Cubic Meter in Plankton of 

 Smith's Canal in lOl'S — (Continued) 



Flagellate 

 unidentified 



Heraidinium 

 nasutum 



528,960 



"i05,792 

 105,792 



" 105,792 



Mallomonas 

 sp. 



Pandorina 

 morum 



6,400 

 6,400 

 1,600 

 25,600 

 19,200 

 6,400 

 3,200 

 3,200 



Peridinium 

 cinctum 



105,792 

 211,584 



317,376 



158,688 



Peridinium 

 sp. 



Phacus 



1913 pleuronectes 



1/11 



1/19 



1/25 



2/ 2 



2/ 8 



2/15 



2/23 



3/ 1 



3/ 8 



3/15 



3/23 



3/29 



4/ 5 



4/13 



4/19 



4/26 



5/ 3 



5/10 



5/17 



5/24 



5/31 



6/ 7 



6/16 



6/21 



6/28 



7/ 5 



7/12 



7/19 



7/26 3,200 



8/ 2 



8/ 9 



8/15 



8/23 



8/31 



9/ 6 



9/13 



9/20 



9/27 



10/ 4 



Platydorina 

 caudata 



Pleodorina 

 californica 



Pleodorina 

 illinoisensis 



Pteromonas 

 sp. 



Syncrypta 

 volvox 



52,896 



3,200 



52,896 

 " 1,666 



32,000 

 64,000 



25,600 

 12,800 

 76,800 

 12,800 

 12,800 

 12,800 



6,400 



12,800 



105,792 



51,200 



12,800 



105,792 



25,600 



12,800 



