ON ALCYONIUM PULMONIS INSTAR LOBATUM ELLIS. 277 



Scotland and England. From the Channel it extends along the Belgian coast 

 and through the whole North Sea, Avhere it appears to be very abundant every- 

 Avhere, enters Danish waters (Greater Belt), and then follows the whole west coast 

 of Sandinavia by Lofoten and Finmark to the Murman coast. Here its most 

 easterly locality is the Kola Fjord. Towards the north it spreads through the 

 Fartie Islands and Iceland to the neighbourhood of Cape Farewell on the one 

 side and the Stor Fjord (Spitz be rgen) on the other. Only at these two points 

 does it go Avithin the Arctic Circle, and it seems always to remain in the 

 neighbourhood of the warmer currents. The whole area of distribution 

 extends therefore from Avest to east from 48° W. to 34° E., from south to 

 north from 48° 50' X. to 77° 8' X., or through 82 degrees of longitude and 29 

 degrees of latitude. 



The species generally prefers deeper water. The vertical distribution lies, 

 as far as the records show, between 38 and 300 metres. A decided littoral 

 form the species is certainly not. In the Channel it appears to occur only in 

 deeper water, and is absent from the coastal zone. In many places it is 

 clearly extraordinarily abundant, as for example in the North Sea, especially 

 in the neighbourhood of the Dogger Bank and the Great Fisher Bank. The 

 species appears to live chiefly on sandy ground. 



BIBLIOGRAPHY. 



Adams, H. & Adams, A., The Genera of recent Mollusca ; arranged accord- 

 ing to their Organization. V. 1, 2; atl. London. 1858(1853-58). 

 Alder, J., Observations on the British Tunicata, with Descriptions of several 



new Species. In: Ann. Nat. Hist., ser. 3 v. 11 p. 153-173 t. 7. 



London. 1863. 

 , Report on the Mollusca. In : Reports of Deep Sea Dredging on the 



Coasts of Northumberland and Durham, 1862-4. In : Nat. Hist. 



Tr. Northumberland, v. 1 p. 511. London, Newcastle-on-Tyne. 



1865 (1867). 

 Alder, J. & Hancock, A., Tunicata. In: Alder, J., A Catalogue of the 



Mollusca of Northumberland and Durham. In : Tr. Tyneside Club, 



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 , The British Tunicata. An unfinished monograph by the late Joshua 



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 Allamand, J. N. S., Essai sur I'histoire naturelle des Corallines. . . . Par 



Jean Ellis. Traduit de I'Anglais. La Haye. 1756. 

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V. 1-3. Ebroduni. 1651. 



