

NORTH ATLANTIC PLANKTON. 43 



As the species of Copepoda are more numerous than 

 the other organisms, we have thought it more convenient 

 to place the Copepoda at the end of each list rather than 

 in their zoological position about the middle 



Outward Journey — Liverpool to Quebec. 

 1. August 5th, 9 p.m., to August 6th, 8 a.m. From 50 

 miles off Liverpool to about Rathlin Island, Ireland. 

 Water slightly phosphorescent; no Ceratium observed; 

 an ordinary Irish sea gathering, containing : — 



Fish eggs. 



Gastropod larva?. 



Limacina retroversa. 



Nyctiphanes norvegica (small). 



Nauplei, and Zoeas (Crab). 



Amphipoda (fragments). 



Philomedes interpuncta. 



Sagitta bipunctata. 



Mitraria larva. 



Medusoids (small). 



Campanularians (broken) 

 Many Copepoda, including : — 



Oithona spinifrons (common). 



Calanus ftnmarchiciis (common). 



Paracalanus parvus (few). 



Temora longicornis (few). 



Acartia clausii (few). 



Metridia armata (rare). 



Pseudocalanus elongatus (few). 



Centropages hamatus (few). 



C. tijpicns (few). 



Anomalocera pater sonii (few). 



Longipedia coronata (rare). 



Ectinosoma atlanticum (rare). 



