THE PLANKTON OF THE FAROE CHANNEL AND StlETLANDS. 363 



cornutus and nasuius ; Thaumalcus ; jEtidius annatus ; Augaptilus ; 

 ^gistMis ; Gaidius. 



Perhaps the most remarkable in this list is ^gisthus, of which only- 

 four examples are recorded by Giesl^recht, the limits of the species 

 being 3° S. and 3° N,, 99° W. 



The common Eucalanus of the Faroe Channel is E. elongatus. E. 

 attcnucdus is very uncommon. Eucalanus elongatus is frequently found 

 round the Shetland coast, and on one occasion I took a quantity 

 in Scalloway Deeps. 



llhincalanus nasutus, common in the Faroe Channel, is also often 

 captured off the Shetland coasts. Plcuromma ahdominale I have only 

 once captured off the north coast of Shetland, and Fleuromma rohustum 

 is quite as common in the Faroe Channel as F. ahdo7iiinale. 



Onccea is common in deep water and up to surface hauls in this 

 region. Euchceta norvcgica I have never taken at the surface, though 

 not unfrequently at forty to fifty fathoms' depth, but this being 

 in an open " mid- water net," it may very well have been caught on the 

 way up. 



Scolecithrix is not uncommon in the Faroe Channel, but I am unable 

 to refer my specimens to any described species. Curiously I have 

 never succeeded in finding (though I have sought diligently) the 

 Metridia normani which Giesbrecht records from the Faroe Channel. 

 In few tow-nettings is M. lucens (and in deep water M. longa) absent, 

 and of very common occurrence is a (? Metridia with the clasping 

 antenna on the left side, but this species is certainly not 31. normani. 

 It very greatly resembles M. lucens, except for the peculiar position of 

 its clasping antenna (left side). 



Leuchartia jiavicornis and Thaumaleus have each been captured only 

 once. The occurrence of such forms as jEgisthus, Aiigaiotihts, and 

 Gaidius in these northern waters is very singular. Calanus hyperhoreus, 

 which occurs occasionally around the Shetland coast and frequently 

 in the Faroe Channel, is described by Giesbrecht as a distinct species. 

 Thompson, in his report on Fowler's Copepods {loc. cit), is inclined 

 to regard it as merely a larger variety of C. finmarcli.; but I see no 

 reason to doubt the correctness of Giesbrecht's view, that it has specific 

 differences from the latter. 



Augajjtilus, Euchirella, Gaidius, and Retcroehceta appear to be deep- 

 water Copepods, and not to approach the coasts. Anomalocera is 

 apparently one of the very few Copepods (not Harpacticidse) which 

 never descend into deep water, probably never below fifty fathoms. 



