276 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



(2) AspleniiLvi ohtusatum, Porst., var. difforme, a fern 



resembling the A. marinum of Britain, and found on 

 the rocks of the south coast of Norfolk Island. 



(3) Aspidium ( Polystichuni ) triangulum, Swartz, var. 



ilicifoliwin, a form with elongated fronds rooting at 

 the points. 



(4) The fruit and leaves of the Shaddock, Citrus decumana, L. 

 Mr. Wm. Stewart read a part of a paper entitled " Some 



Notes on the Ferns and Macrofungi of the Clyde Area," in which 

 he described the methods adopted in defining certain districts of 

 the Clyde Area, with their distinctive species and varieties. He 

 showed also a map in which the districts were defined by boundary 

 lines. 



The President laid on the table a copy of the Revised List of 

 the British Marine Mollusca and Brachiopoda, and read a paper 

 prepared by Rev. G. A. Frank Knight, M.A., one of the Vice- 

 Presidents of the Society. Mr. Knight explained how this new 

 list came to be published. Fifteen years ago, there had been 

 issued by Mr. Somerville, the President, a Handlist of the British 

 Marine Mollusca and Brachiopoda, which embraced all the species 

 and varieties mentioned in Jeffrey's " British Conchology," as 

 well as all others up to the date of publication (1886). But in 

 the interval much more had been learned. To Mr. Knight had 

 been entrusted the task of drawing up the list of the Marine 

 Mollusca of the Clyde for the Handbook of the Fauna and Flora 

 of Clydeside, in view of the coming of the British Association to 

 Glasgow in 1901, and he naturally desired to use the best 

 classification and nomenclature. After considerable negotiation, 

 a Committee of the Conchological Society of Great Britain was 

 appointed to draw up a new list. The committee consisted of 

 Dr. George W. Chaster, M.R.C.S., Southport; Mr. James Cosmo 

 Melvill, M.A., F.L.S., Manchester; Mr. W. E. Hoyle, M.A., 

 M.Sc, M.R.C.S,, F.R.S.E., Director of the Manchester Museum, 

 Owens' College ; and Mr. Knight. They were assisted in their 

 deliberations by suggestions from the following : — Mr. W. H. 

 Dall, Smithsonian Institution, Washington ; Mr. J. T. Marshall, 

 Torquay; Mr. Richard B. Newton, F.G.S., London; Mr. Edgar 

 A. Smith, F.Z.S., Keeper of the Conchological Department, 

 Natural History Museum, South Kensington ; Mr. Robert 



