90 



Proceed in (J s of the Roi/aJ Irish AcadeDii). 



— 



1 

 Feb. 23. 



Mar. 5. 



Mar. 17. 



Mar. 30. 



j April 13. 



AprU 27. 



' May 11. 



Mayi 



Anataena flos-aquae, 



l,864,-500 



2,005,000 



1,147,000 



1,238,.500 



15,612,.5O0 



8,159,500 



10,410,500 



4,422, 



• Oscillatoria Agardlm, 



(bottom-surf, catch only.) 



Gomphosphaeria Naegeliana, 



10,350,000 



2,6.50,000 



(Not CO 



unted) 



18,050,000 



(Not 

 counted) 



18,450,000 



(No 

 count 



■286,000 



562,500 



698,500 



902,000 



1,317,500 



' 732,000 



954,000 



313,£ 



Microcystis spp. , 



(bottom-surf, catch only.) 



41,600 



6,500 



- 



- 



12,000 



- 



5,000 



- 



Chroococcus, 



(bottom-surf, catch only.) 



5,200 



1,000 





- 



- 



- 



- 



- 



Dinobryon, 



- 



- 



10,500 



9,000 



1,500 



- 



2,500 



3,C 



Peridinium, 



— 





— 



— 



500 



— 



— 



— 



Ceratium, 



- 



500 



- 



- 



8,000 



7,000 



10,500 



l,' 



Carchesium, 



— 



— 



— 





— 





- — 



— 



Tintinnidium, 



- 



1,500 



9,000 



6,000 



3, .500 



7,300 



1,500 



3,( 



Acanthocystis, 



3,000 



- 



16,.500 



15,500 



24,000 



13,075 



16,500 



4.£ 



Diaptomus gracilis, . . 



880 



1,080 



1,352 



1,169 



3,620 



2,879 



3,200 



4,J 



Cyclops (chiefly strenuus), . . 



i 160 



160 



200 



250 



500 



240 



520 



732 



Bosmina spp., 



280 



430 



848 



1,9.52 



8,580 



4,794 



27,800 



242 



Daphnia hyalina, 



var. lacustris. 



- 



- 



- 



- 



120 



162 



1,520 



1,^ 



Nauplii (copepod), . . 



4,500 



4,500 



7,500 



6,500 



18,000 



12,137 



7,500 



6,( 



Anurea cochlearis, 



10, .500 



16,000 



16,500 



14,000 



13,000 



12,300 



12,000 



25,i 



Amirea aculeata 



— 



— 



_ 



1,-500 







2,000 



1,.500 



6,( 



Polyarthra platyptera, 



- 



- 



- 



- 



- 



- 



- 



4,! 



Notholca striata, 



13,500 



22,000 



13,.500 



3,000 



5u0 



_ 



— 



- 



Notholca longispina, . . 



3,000 



1,500 



2,500 



7,000 



4, .500 



— 



.5,500 



3,( 



Triarthra longiseta, . . 



- 



- 



- 



1,500 



500 



5,700 



1,500 



3,1 



Mastigocerca, 



— 



— 



— 



_ 



_ 



— 



— 



- 



Ilotifera spp., 



• - 



— 



1,.500 



6,000 



7,500 



— 



4,500 



7,i 



. Mysis relicta, . . 



— 



— 



40 



- 



- " 



— 



— 



— 





















