THE AQUATIC COLEOPTERA OF THE NORTH EBUDES 217 



The complete list of " Britannic" records for D. lapponicus 

 up to the present time seems to be as follows : 



" Clyde district " (uncertain). Inverness, E. (Strathglass). 



Ebudes Mid (Mull). W. (Ben Nevis). 



,. North (Rhum, Skye, Donegal (probably West ! ?). 



El 'gg)- 



CONTRIBUTION TO OUR KNOWLEDGE OF THE 

 HYDROID FAUNA OF THE WEST OF SCOT- 

 LAND. 



BEING AN ACCOUNT OF COLLECTIONS MADE 

 BY SIR JOHN MURRAY, K.C.B., ON S.Y. " MEDUSA.' 



By JAMES RITCHIE, M.A., B.Sc., 



The Royal Scottish Museum. 



(Continued from p. 164.) 



54. THUIARIA LONCHITIS (Ell. and Sol.) ( = Thuiaria articnlata 



of Hincks's "History"). 



Kirchenpauer, in 1884, endeavoured to unravel the confusion 

 which had gathered round the Thuiaria articnlata of authors, a 

 designation which included two distinct species, the Sertnlaria 

 articnlata of Pallas and the Thuiaria articulata of Fleming, the latter 

 of which had been earlier designated T/iuiaria lonchitis by Ellis and 

 Solander. Comparison of the Cape of Good Hope species with that 

 found in British waters leaves no doubt as to their specific distinct- 

 ness, although so recently as 1 900 Pictet and Bedot considered 

 them specifically identical, and there can be almost as little doubt 

 that the Cape species, with opposite pinnae springing from the middle 

 of the internodes, is the original T. articulata of Pallas. After 

 examination of a large number of specimens, including those in the 

 British Museum and in the collections made by the Scottish North 

 Sea Investigation Committee, I am convinced that T. articulata, 

 Pallas, does not occur in British waters, and that that name may 

 therefore be safely deleted from British lists and replaced by Thuiaria 

 lonchitis (Ellis and Solander). 



CLYDE SEA AREA. KYLES OF BUTE off Tighnabruaich. ARRAN 

 BASIN Kilbrennan Sound, 20 fms. (M.). BARRIER PLATEAU 

 Achinhoan Head and Davarr Is., sand, 17-20 fins. ; Sanda 

 to Achinhoan, 19-22 fms., m.c. ; Sound of Sanda, 22 fms...;.... 

 between Sanda Is. and Ailsa Craig, 24 fms. 



SANDA Is., 35 fms. 



LIBRARY 



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