314 Part III.—Fifteenth Annual Report 
Temora longicornis (Miiller).—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 tg 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 
ficure is given on Plate IX. (fig. 13) showing the nature of the difference. 
Iam now inclined to consider the Zemora recorded under this name 
from the Gulf of Guinea to belong, not to 7’. longicornis, but to T. 
(Calanus) turbinatus (Dana)—a form closely related to the other. 
Metridia hibernica (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 Plewr- 
omma of Claus. Dr Giesbrecht, in his valuable monograph on the Copepoda 
of the Gulf of Naples, has shown that, while the form discovered by Brady 
and Robertson 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). 
Eucheeta norvegica, Boeck.—Ii 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 Eucheta 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 Hucheta 
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), Farde Channel (Brady), south-west and south of Norway (Boeck), 
Heligoland (Claus), Wimereux (Canu). 
