46 6 



Proceedings of the Royal Irish Academy. 



List of Fresh-water Extomostraca from Clare Island and the Clew Bay 

 District, together with the species recorded from the remaining parts of 

 Mayo and Gal way. 



[Xote. — Tiie figures in the first four columns, except the totals which refer to the number 

 of species, indicate the number of separate stations where the species have been found, and 

 consequently give a rough idea of the relative commonness or rarity of the forms.] 



Sl-KCIEC. 



Clare 

 Island. 



Clew Bay Distkict. 

 Best of 



, ,.„ Westpoit Louisburgh ^ a J° and 



Aunill 5 m \ Gal way. 



Island sndCruagh- ' 



Castlebar. patrick. 



Total number of stations, 



21 



15 



14 



9 



— 



CLADOCERA. 













SlDIDAE. 













Sida erystallina (0. F. M.), . 



1 



2 



3 



■2 



X 



Diaphanosoma brachyurum (Lievin) 



— 



4 



o 



1 



X 



nasutn, Kane, 



— 



— 



— 



1 



X 



leuchtenbergianum, Fischer, 



— 



— 



— 



— 



X 



Latona setifera (0. F. M.), 



— 



I 



— 



— 





HoLOFEDlDAE. 













Hnlopediiim gibberum, Zaddach, 



— 



1 



— 



— 



X 



Daphnidae. 













Ilaphnia pulex (De Geer), 



— 



— 



— 



— 



X 



obtusa, Kurz : propinqua, Sars 



— 



1 



— 





— ' 



var., 



— 



1 



— 



— 



— 



longispina, 0. F. M., 



1 



— 



3 



— 



X 



hyalina, Leydig, s. str., . 



— 



— 



1 ■ 



— 



— 



lacustris, Sars, 



1 



I 



1 



— 



X 



galeata, Sars, 



— 



— 



— 





X 



Seapholeberis mucionata (0 F. >I.j 



— 



— 



3 





X 



Simocephalus vetulus (0. F. 31.), 



7 



— 



3 





X 



exspinosus (Koch), . 



— 



— 



— 





X 



Ceriodaphnia reticulata, Jurine, 



— 



— 



— 





— 



megalops, Sars, 



— 



— 



- 



— 



X 



quadrangula (0. F. M.), . 



6 



3 



3 



— 



X 



pulcbella, Sars, 



— 





1 



— 



• — 



affinis, Lilljeborg, 



— 





1 



— 



— 



BosyaswAS. 













Bosmina longirostris (0. F. M.), 



— 



— 



1 



— 



— 



obtusirostris, Sars, 



— 



4 



1 



— 



X 



longicornis, Schoedler, 



— 



— 



— 



2 



— 



longispina, Leydig, 



— 





— 



— 



? 



coregoni, Baird ; mixta, Liilj. 



— 



— 





— 



X 



Lyncodaphxldae. 













Ilyocryptus Bordidiis (Lievin), 



— 



1 





— 



— 



Macrothrix rosea (Jurine), 



— 



— 



— 



— 



X 



I>athonura rectirostris (0. F. M.), 



_ 





— 



— 



X 



