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AMPHORA INFLEXA, A RARE BRITISH DIATOM. 



By Geokge West 

 (University College, Dundee). 



{Read March llth, 1919.) 



Plate 2, 



In the English Mechanic, February 5t]i, 1915, p. 37, appeared 

 an illustrated query from " D. G." respecting a marine diatom. 

 In tlie next number, p. 51, " N. E. B." remarks upon this 

 specimen, doubtfully regarding it as a variety of Amfhora 

 quadricostata, and on p. 59 two other writers suggest names. 

 On p. 78 "D. G." supplemented his query with further par- 

 ticulars, and by a printer's error has been made to say — "It is 

 a Bristol diatom, found by me in Carmarthen Bay." For Bristol 

 read British. More recently a well-known Belfast diatomophile 

 was appealed to, and he referred the finder to the present writer, 

 who, owing to war pressure, failed to see the above-mentioned 

 correspondence until his attention was directed to it recently 

 by the gallant and courteous " D. G." * 



The diatom in question is the Amphora inflexa of H. L. Smith, 

 described in The Lens, 1873, p. 78, PI. II. fig. 16. It had 

 previously been named Amphipleura inflexa by De Brebisson, 

 who found it at Calvados in Normandy on maritime rocks, and 

 described it in the Species Algarum of Kiitzing, 1849, p. 88. 

 These names were mentioned by me when dealing with Amphi- 



* The author is permitted to state that " N. E. B." referred to 

 above is N. E. Brown, A.L.S., late of the Herbarium, Kew, and " D. G." 

 is Capt. David Griffiths, Southboume, near Bournemouth. 



