19201 



Allen: Plankton of the San Joaquin River 



271 



Table 4. — Plankton Organisms Per Cubic Meter in Stockton Channel, 

 Daily Series in 1913 — (Continued) 



1913 



7/30 

 7/31 

 8/ 1 

 8/ 2 

 8/ 3 

 8/ 4 



Rotaria 

 neptunia 



6,400 



0,400 



Rotaria 

 rotatoria 



6,400 

 12,800 



3,200 



32,000 



158,688 



6,400 



Rotifer 

 unidentified 



3,200 



158,688 

 3,200 

 3,200 



105,792 



Total 

 Bdelloida 



16,000 



19,200 



161,888 



41,600 



174,688 



112,192 



Anuraeopsis 

 fissa 



6,400 



Asplanchua 

 brightwelli 



25,600 



18,200 



44,800 



105,792 



12,800 



1913 



7/ 5 

 7/ 6 

 7/ 7 

 7/ 8 

 7/ 9 

 7/10 

 7/11 

 7/12 

 7/13 

 7/14 

 7/15 

 7/16 

 7/17 

 7/18 

 7/19 

 7/20 

 7/21 

 7/22 

 7/23 

 7/24 

 7/25 

 7/26 

 7/27 

 7/28 

 7/29 

 7/30 

 7/31 

 8/ 1 

 8/ 2 

 8/ 3 

 8/ 4 



Brachionus 

 angularis 



3,200 

 3,200 

 3,200 



158,688 



3,200 



6,400 



158,688 

 3,200 



105,792 



6,400 



Brachionus 

 angularis 

 caudatus 



476,064 



423,168 



264,480 



1,269,504 



1,163,712 



581,856 



1,005,024 



1,375,296 



581,856 



846,336 



740,544 



793,440 



1,057,920 



1,110,816 



793,440 



476,064 



370,272 



528,960 



317,376 



740,544 



1,216,608 



1,481,088 



3,755,616 



1,851,360 



581,856 



423,168 



264,480 



581,856 



211,584 



211,584 



264,480 



Brachionus 

 budapestenensis 



Brachionus 

 calyciflorus 



3,200 

 6,400 



6,400 



6,400 



6,400 



Brachionus 

 capsuliflorus 



19,200 



6,400 



6,400 

 6,400 



6,400 



Brachionus egg; 



attached, 



female 



158,688 

 105,792 

 105,792 

 528,960 

 687,648 

 264,480 

 317,376 

 528,960 

 317,376 

 687,648 

 423,168 

 846,336 

 264,480 

 370,272 

 476,064 

 158,688 

 211,584 

 581,856 

 158,688 

 476,064 

 846,336 

 370,272 

 1,428,192 

 634,752 

 211,584 

 12,800 

 211,584 

 370,272 

 264,480 

 105,792 

 158,688 



1913 



7/ 5 

 7/ 6 

 7/ 7 

 7/ 8 

 7/ 9 

 7/10 

 7/11 

 7/12 

 7/13 

 7/14 

 7/15 

 7/16 

 7/17 

 7/18 



Brachionus 



egg; attached, 



male 



105,792 



Brachionus 



egg: free, 



female 



1,005,024 

 581,856 

 793,440 



1,057,920 

 899,232 



1,269,504 

 846.336 



1,005,024 

 740,544 

 528,960 

 687,648 

 370,272 

 476,064 



1,005,024 



Brachionus 

 patulus 



Brachionus 

 plicatilis 



6,400 



6,400 



Brachionus 

 urceus 



44,800 



6,400 



12,800 



19,200 



44,800 



211,584 



158,688 



528,960 



370,272 



581,856 



528,960 



528,960 



47,064 



1,216,608 



Diurella 

 egg 



3,200 

 3,200 



3,200 

 3,200 



