256 



Part III. — Twenty-second Annual Report 



AMPHIPODA. 



The following notes on some species belonging to the Amphipoda and 

 one or two other groups of the Malocostraca obtained in plankton — 

 samples collected during the investigations recently carried out by Dr. 

 T. Wemyss Fulton in the North Sea and the Moray Firth — may be of 

 interest. 



Hyperia medusarum (0. F. Muller). This species, which appears to 

 have a decidedly northern and Arctic distribution, and of which there is 

 so far no authentic British record, was obtained in a surface plankton- 

 sample collected about 180 to 185 miles east by north of Aberdeen on 

 October 8th, 1903. One or two full-grown females and several young 

 specimens were noticed. In the same gatherings there were observed 

 Clione borealis and Limatina retroversa — two northern Pteropods — as 

 well as Tryphosa nanoides, Hoplonyx cicada, and some other and 

 commoner forms. 



Tryphana malmi, Boeck. This curious and brightly coloured little 

 Amphipod occurred in a surface gathering collected off the Ord of Caith- 

 ness, Moray Firth, on November 21st, and in a bottom gathering collected 

 off Lossiemouth on December 29th, 1903. This is the first time I have 

 met with Tryphana so close to the Scottish north-east coast, but the Rev. 

 Canon A. M. Norman records its occurrence at Banff, whence specimens 

 were sent to him many years ago by Thomas Edward.* Professor G, 0. 

 Sars in his great work on the Crustacea of Norway records this species 

 from three different places on the west coast of Norway, and only from 

 deep water ; he states further that Boeck also obtained it in deep water 

 in Hardangerfjord.f The only other localities which Norman gives in 

 his note on the distribution of the species are the Faroe Isles and North 

 Atlantic, lat. 18° 8', long. 30° 5' W. (Stebbing). Tryphana malmi may, 

 however, be less rare than the apparent dearth of information concerning 

 its distribution would seem to imply. I have obtained it in at least two 

 plankton-samples from the Shetland Islands, in addition to the two 

 mentioned above.J 



Anonyx nugax (Phipps). This species, rarely met with in the British 

 seas, was captured in Aberdeen Bay on December 23rd, 1903. The species 

 was taken for the first time in Scottish waters in February, 1889 ; on 

 that occasion it was obtained near May Island, at the mouth of the Forth 

 estuary. § It was again met with in January, 1901, in the Cromarty 

 Firth, when specimens collected on the 10th of that month by Mr. F. G. 

 Pearcey were forwarded to the Fishery Board's Laboratory at Bay of 

 Nigg, near Aberdeen, || and the present record of its occurrence in 

 Aberdeen Bay is the only other occasion on which it has been observed 

 off the east coast of Scotland. None of the Scottish specimens of 

 Anonyx nugax have attained to anything like the size of some Arctic 

 examples. 



I 



Hoplonyx cicada (Fabricius). This species, which, like the last, is 

 also a northern form, has already been referred to in the note on Hyperia 



* British Amphipoda of the Tribe Hyperiidse, &c., Ann. and Mag. Nat. Hist., (7), vol. 



v., p. 133 (January ]900). 

 f Crustacea of Norway, vol. i., Amphipoda, p. 18. 



J Conseil permanent International pour l'exploration de la Mer ; Bull, des Results, 



Pt. D., for August, 1903, pp. 44-47. 

 § Eleventh Ann. Rept. of the Fishery Board for Scotland, Part III., p. 212, pi. v., fig. 



' 18-20 (1893). 



|| Nineteenth Ann. Rept. of the Fishery Board for Scotland, Pt. III., p. 258 (1901). 



