SALT-WATER POND AT AMBLE. 



331 



can take place between the pond and the sea, the uniformly 

 quiescent water and the absence of aeration such as is 

 brought about in the sea by constant currents and break of 

 waves, it is not surprising that both animal and vegetable 

 life in their higher grades are here almost entirely absent, and 

 that even in lower grades there should be great scarcity. 

 Such, indeed, seems to be the case, but the small Crustacea 

 which constituted almost the sole proceeds of the nettings — 

 though few in number — proved to be of great interest, several 

 of them being new to our district and two new to science. 

 The following list embraces all the species observed. 



Macromysis flexuosa (Miiller) 

 Melita palmata, Mont. 

 Isias clavipes, Boeck. 

 Temora longicornis (Miiller) 

 Acartia longiremis (Lilljeborg) 

 Cyclopina gracilis, Claus. 



Ectinosoma brunnea, n. sp. 

 Bradya minor, T. & A. Scott. 

 Harpacticus chelifer (Miiller) 

 Idya furcata (Baird) 

 Proteocypris salina, nov. gen. et sp. 

 Daphnia pulex, Lin. 



The accompanying sketch map will give a fair idea of the 

 position and surroundings of the pond. 



NorS-h Sea 

 lightheuse 



190 SJX) soo fee/' 



