SEA-FISHERIES LABORATORY 



205 



September. Diatoms, Sagitta, Autolytus, Copepoda, larval 

 Echinoderms, Crab Zoea and Megalopa. 



Coscinodiscus was the only representative of the 

 Diatoms. The Copepoda were similar to those recorded 

 for Station II., with the addition of Isias. Nyctiphanes 

 was present in the bottom net in April. The Echinoderms 

 consisted of young brittle starfish at the surface only. 



Port Erin, 1903. 



Characteristic Organisms. 



April . . . Diatoms, Sagitta, Copepoda, Copepod nauplii, 

 Barnacle nanplii, and one species of fish 



egg- 



May ... Diatoms, Sagitta, Copepoda, Cladocera, 

 Oikopleura, Medusoids, Copepod nauplii, 

 Barnacle nauplii and " Ostracod " stage, 

 larval shrimps, and five species of fish eggs. 



June ... Diatoms, Gelatinous algse, Sagitta, Cope- 

 poda, Cladocera, Oikopleura, Medusoids, 

 Copepod nauplii, " Ostracod " stage of 

 Barnacles, and five species of fish eggs. 



July ... Sagitta, Tomopteris, Copepoda, Cladocera, 

 Oikopleura, Medusoids, Crab Zoea and 

 Megalopa, four species of fish eggs. 



August ... Pleurobrachia, Sagitta, Copepoda, Medu- 

 soids, Copepod nauplii, and three species 

 of fish eggs. 



September. Diatoms, Pleurobrachia, Sagitta, Autolytus, 

 Tomopteris, Copepoda, Crab Zoea and 

 Megalopa, larval shrimps, Medusoids. 



October ... Diatoms, Pleurobrachia, Sagitta, Copepoda. 



November . Diatoms, Sagitta, Copepoda, Crab Zoea, 

 larval worms and Oikopleura. 



