DIATOMS. 



THE following list has been drawn up by Mr. T. Comber from materials 

 supplied by Dr. Thompson and others ; from slides of Professor Walker 

 Arnott, and others in his own collection ; and from two nettings in the 

 Firth of Clyde supplied by Dr. Murray. The works of Professor Gregory of 

 Edinburgh, and the herbaria of Professors Walker Arnott, and R. Henuedy 

 have also been consulted. Rev. Dr. Landsborough, of Kilmarnock, also 

 supplied a MS. list of his own and the late Dr. Landsborough's collections. 

 All the findings recorded since the list was begun have been verified by 

 Mr. Comber, except a few which w r ere named by Mr. W. West, and which 

 occurred in collections of Freshw r ater Algae. 



REFERENCE KEY. 



G.= Professor Gregory, Papers in Trans, and Proc. Roy. Soc., Edin., vols. 



3, 4, and 5. 



M. = Dr. Murray, Trans, and Quart. Journ. Micro. Sc., vols. 3, 4, and 5. 

 W. A. = Walker Arnott Collection (Glasgow University). 

 H. = Kennedy Collection (Technical College, Glasgow). 

 J. P. =John Paterson, Esq., Rutherglen. 

 J.C.T. = J. C. Thompson. 

 L. = Dr. Landsborough, MS. 

 Sm. = Prof essor Wm. Smith, Syn. Brit. Diat. 

 S.E.=G. F. Scott Elliot. 

 T.=J. M. B. Taylor, Esq. 

 R. =John Rattray, Esq. 



V. H. = Van Heurcke, Textbook of Diatomaceae. 

 D* in localities = " Cantyre Peat " may be in D, E, or I districts. 



Amphiprora paludosa, Km. ABF, Glenshira Sand, G. ; Gareloch, M. ; 

 Cumbrae, W. A. 



A. alata, Kutz. var. pulchra, Bail. A F, Glenshira Sand, G. ; Curnbrae, 

 W.A. 



Auricula insecta, Cl. F, Tarbert, J. C. T. ; Curnbrae, W. A. 



A. decipiens, Cl. A E F, Loch Fyne, Glenshira Sand, G. ; Arran, Cumbrae, 

 W.A. 



A. complexa, Cl. AE, Loch Fyne, W. A. ; Arran, G. 



Tropidoneis lepidoptera, Cl. ABF, Glenshira, G. ; Gareloch, M. ; Cum- 

 brae, W. A. & J. P. 

 var. pusilla, Greg. A, Loch Fyne, G. 



T. maxima, Cl. A E F, Loch Fyne, Lamlash, G. ; Cumbrae, W. A. 



T. elegans, Cl. A, Loch Fyne, Glenshira Sand, G. 



T. Van Heurckii, Cl. B, Loch Goil, M. 



