238 Part 111. — Nineteenth Annual Report 



locality, also in the West of Scotland, viz., in the Sound of Mull, where it 

 was collected by the "Garland" in 72 fathoms on March 31st, 1900. 

 This record shows that, though the species may be rare, its distribution in 

 Scottish waters is probably fairly extensive. 



JEtidius armatus, G. S. Brady. 



A few specimens of this curious species were obtained in tow-net 

 gatherings collected to the eastward of the Fair Island in October, 1900, 

 but they were all females, and in connection with this it is interesting to 

 note that the specimens in the collections made by H.M.S. " Eesearch " 

 in the Shetland-Faroe Channel in July and August, 1896, were also all 

 females.* In JEtidius armatus the bifid rostrum with its stout spine-like 

 branches, which projects from the front of the head at nearly right 

 angles to the body, appears, when seen in profile, not unlike the beak of a 

 bird. It was this character of the rostrum which suggested to Dr. Brady 

 the name of the genus. t 



Bradyidius armatus, Vanhoffen. 



This species was collected with the tow-net in October, 1900, off the 

 Fair Island. 



Scolecithrix hibernica, A. Scott. 



This species, which was discovered in the Irish Sea by my son, and 

 which has been observed in the Firth of Clyde and the Moray Firth by 

 myself, has now to be recorded from a new station — viz., about fifty 

 miles south-south-east of the Fair Island, between Orkney and Shetland. 

 It occurred in a gathering collected with a tow-net fixed to the head of 

 one of the trawls of the steam trawler "St. Andrew," on October 16th, 

 1900, while that vessel was engaged in carrying on the investigations 

 referred to in .the preliminary remarks. This is the farthest north of 

 any of the localities where S. hibernica has yet been observed. 



Centropagid^3. 



Centropages typicus, Kroyer. 



Specimens of this species were obtained in Lerwick Bay, Shetland, 

 by the steam trawler " St. Andrew " while at anchor there in October 

 last. It was also observed to be moderately frequent off the Fair Island 

 on the 19th of the same month. 



Centropages hamatus (Lilljeborg). 



This Centropages occurred in a tow-net gathering collected in Lerwick 

 Harbour about the same time as the specimens of C. typicus were 

 collected. 



Eurytemora a finis (Poppe). 



This Copepod occurred in great abundance in some of the hatching 

 boxes at the Sea -Fish Hatchery at Bay of Nigg, at the end of the hatching 

 season last year (1900). 



* Notes on the Animal Plankton from H.M.S. " Eesearch." Fifteenth Annual Report 

 of the Fishery Board for Scotland, Part III., p. 313 (1897). 

 f Eeport on the Copepoda collected by H.M.S. "Challenger," p. 75. 



