Marine Copepoda 



9k 



finmarchicus by T. Scott [15th Ann. Rep. Fishery Board, Scotland 1896 (1897) 

 p. 172, pi. Ill, f. 22.] They are now believed to belong to the Peridinea and 

 have been named ElloUopsis chattoni by Professor Maurice Caullery.' 



Fig. 1. Portion of right antenna of Pseudocalanus from Collinson point 

 with EUohiopsis chattoni CauUery attached to it. 



According to Carl With (Copepoda I. Danish Ingolf Exped., vol. Ill, part 

 4, p. 57, Copenhagen 1915) this long established species should be known in 

 future as Pseudocalanus minutus (Kroyer 1845-47). 



5. Gaidius sp. juv. 



Only immature examples of this form occurred in the gathering from station 

 27 y2 (above, table V). They were mostly immature males. Front obtuse, 

 rostrum obsolescent or absent; length of immature cT, 1-92 mm.; fifth feet of 

 immature male biramous (Fig. 2). 



Fig. 2. Gaidius immature cT, abdomen 4-iointed. 

 R. Right fifth leg. 

 L. Left fifth leg. 



I had at first entered them in my list as Chiridius obtusifrons because of 

 the absence of a rostrum and the presence of short lateral acuminations of the 

 last thoracic segment. The male of Aetideus armatus is likewise devoid of a 

 rostrum, but according to Sars this species has never been found anywhere in 



' M. Caullery (Paris): Sur un parasite de Calanus helgolandicus Claus, appartenant probablement aux 

 Peridiniens {EUohiopsis chattoni n.g., n.sp.). Verh. VIII, Internat. Zool. Kongresses zu Graz 1910, Jena 

 1911, pp. 440-442. The complete description appeared in Bulletin scient. France, Belgique, t. 44, 1910, 

 faso. 3, 201-214, pi. V. 



