314 Part III. — Fifteenth Annual Report 



Temora longicornis (Mtiller). — The known distribution of this species 

 appears to be confined to a comparatively limited area of the North 

 Atlantic — viz., from lat. 50° to 60° N., westward to about 10° W. long. 

 It has no doubt been recorded from the Adriatic Sea by Dr Claus, and 

 from Marseilles by Dr Gouret ; but Dr Giesbrecht, the eminent authority 

 on the Copepoda, seems to be of the opinion that these records may not 

 refer to this, but to some closely allied form. In my report on ' Some 

 Entomostraca from the Gulf of Guinea, West Coast of Africa,' Temora 

 longicornis is included in the list of Copepoda obtained in the collec- 

 tions from that district, but attention is directed to the fact that the 

 fifth pair of thoracic feet in the male differ somewhat from the same 

 appendages of the males of that species from the British Seas, and a 

 figure is given on Plate IX. (fig. 13) showing the nature of the difference. 

 I am now inclined to consider the Temora recorded under this name 

 from the Gulf of Guinea to belong, not to T. longicornis, but to T. 

 (Calanus) turbinatus (Dana) — a form closely related to the other. 



Metridia liibernica (Brady and Robertson). — This species was described 

 in 1873, in the Annals and Magazine of Natural History, as Paracalanus 

 hibernicus by Dr Brady and Mr (afterwards Dr) Robertson ; it was subse- 

 quently ascribed to Metridia armata of Boeck, and also to the genus Pleur- 

 omma of Claus. Dr Giesbrecht, in his valuable monograph on the Copepoda 

 of the Gidf of Naples, has shown that, while the form discovered by Brady 

 and Eobertson is a true Metridia, it belongs to no previously described 

 species ; he therefore restores the specific name first given to it by Drs 

 Brady and Robertson. The following is a brief summary of what is 

 known regarding the distribution of this species, viz. : North Atlantic, 

 from lat. 51° 22' N., and long. 12° 25' W. to Rockall Bank, Scilly Isles 

 (Dr Brady). Arctic examples, apparently belonging to this species, but 

 twice the size of British specimens, were obtained by the ' Alert ' and 

 ' Discovery ' Expeditions (Dr Brady). Firth of Forth, Firth of Clyde, 

 and Moray Firth (Mihi). Irish Sea (I. C. Thompson). 



Euclmta norvegica, Boeck. — It will be noted that this Copepod has been 

 obtained in a few of the surface tow-net gatherings ; it appears, however, 

 to be found in the greatest abundance in deep water. The distribution 

 of Euchaita norvegica appears to be restricted to a somewhat limited 

 area. Dr Mobius has obtained it off the south-west coast of Norway. 

 Professor Sars reports it as occurring generally in the North Atlantic 

 and Arctic Sea, between Norway, Greenland, and Iceland. It occurs 

 abundantly in Loch Fyne, but sparingly in other parts of the Clyde 

 estuary. The Clyde appears to be near the southern limit of its distri- 

 bution. It is only within comparatively recent years that FAichceta 

 norvegica has been observed in the British seas. 



Centropages typicus, Kroyer. — This species is of more or less general 

 occurrence all round the British Islands, but is somewhat restricted in its 

 distribution. It appears to be confined to the North Atlantic, the 

 North Sea, and the Mediterranean. The following are some of the 

 localities from which Centropages typicus has been recorded, viz. : 

 Canary Islands (I. C. Thompson) ; this seems to be near the southern 

 limit of the species. Mediterranean — [Malta (I. C. Thompson) ; Trieste 

 (Car), Gulf of Naples (Giesbrecht), off Nice (Claus)]. Cape Finisterre 

 (Kroyer), West of Ireland (Brady and Robertson), Shetland Islands (Nor- 

 man), Faroe Channel (Brady), south-west and south of Norway (Boeck), 

 Heligoland (Claus), Wimereux (Canu). 



