NORTH ATLANTIC PLANKTON, ETC. 87 



Medusae (many). 



Eva due nordmanni. 



Schizopods. 



Oikopleura sp. (many). 

 Copepoda : — 



Galanus finmarchicus (abundant). 



Pseudocalanus elongatus (common). 



Acartia clausii (scarce). 



Corycceus pellucidus (abundant). 



C. obtusus (common). 



Oithona spinifrons (common). 



Laophonte curticauda (few). 



Anomalocera pa tersonii (few) . 



Diosaccus tenuicornis (scarce). 



Pontella secitrifer (scarce). 



Corynura discaudata, n. sp. (see above, p. 80). 

 And a new species of Copepod which seems to require 

 a new genus, and which Mr. Thompson characterises as 

 follows : — 



Family Sapphirinid^:, Thorell. 



Genus Pseudolichomolgus, n. gen. 



Like Lichomolgus in general appearance ; also in the 

 antennas, mandibles, maxillae, anterior foot jaw, and fifth 

 pair of swimming feet. 



Conspicuous spinous rostrum. 



Both branches of first four pairs of swimming feet 

 2-jointed. 



Pseudolichomolgus Columbia, n. sp. (PL VIII., figs. 1 — 10.) 



Male : — Length, T98 mm. Body elongated, cephalo- 

 thorax ovate, its first segment occupying nearly half of 

 its entire length. Bostrum (fig. 3) anchor shaped, com- 

 posed of three strong spines, the two outer ones slightly 

 curved outwards at end. The upper arched surface is 



