52 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



from the Gulf of St. Lawrence which is supposed to belong to 

 this species, and which was found on a kind of Stickleback, 

 Gasterosteus biaculeatus, Shaw. 



CLADOCERA. 



The three species of Cladocera observed in these gatherings 

 from the Gulf of St. Lawrence are all common and widely dis- 

 tributed forms. Several examples of both Evadne nordmanni 

 and Podon leucharti were obtained, but the small Podon 

 polyphemoides was very rare, and it was only by dissecting 

 the one or two specimens noticed that I was sure of the species. 



