CONTENTS, Vll 



Page 

 Crustacea from the Silurian Eocks at Girvan, On new forms of, by Pro- 

 fessor John Young, M.D., F.G.S., 169 



Cuma, ]\Ir David Eobertson on a new species of, 97 



Cyclones experienced on the Island of Anietyum, A short account of two, 



by Eev. J. Copeland, cor. mem., 



Cytheridea rohertsoniana, a new Crustacean, IVIr D, Robertson on, - 142 



Diatomaceae, Notes on Coeconeis, Nitzschia, and some of the allied genera 



of, by Professor G. A. Walker- Arnott, 211 



Discina ostreoides, Mr John Young on, 146 



Diver, Great Northern (Colymhus glacialis), Mr Eobert Gray on the, - 43 

 Dredging in the Bay of Eothesay, Notice of the most suitable localities 



for, by Dr John Grieve, -•---.--•- 57 



Dredging, On Marine, by Mr D. Eobertson, 179 



Dredging, On the results of a Summer's, by Dr Scouler, - - 8, 9, 10 



Duck, Long-tailed Ice {Eardda glacialis), Observations on the, by Mr 



Eobert Gray, 87 



Duck, SteUer's Western [Somateria stellerii), Mr James Hamilton on, - 15 

 Dunbar, An account of a visit paid to the shores of, in February, 1864, 



with descriptive notes on the Natural History of the district, by 



■ Mr Eobert Gray and Mr D. Eobertson, 89-93 



Dunlin, Common {Tringa variabilis), Mr Eobert Gray on the, - - 197 

 Dytiscus lapponicus, collected in Ireland, Notes on, by Mr James E. 



Sommerville, B.D., 231 



Echinocardium pennatijidum, Mr D, Eobertson on, .... 99 



Echinm spJiaera, Mr D. Eobertson on, 110 



Edivardsia callimorpha. On the occurrence of, by Mr D. Eobertson, - 45 

 Entomostraca and Foraminifera from the Paisley clay-beds, Mr D. 



Eobertson on, 90 



Entomostraca from Gilmorehill, Mr John Young on, - - - - 379 

 Entomostraca from the Carboniferous Limestones and Shales of the West 

 of Scotland, Descriptive notes on several new and rare forms of, by 



Mr John Young, 122 



Entomostraca from the Ironstones and Shales of the Lanarkshire Coal- 

 field, On Fossil, by Mr John Young, 68 



Entomostraca in Silurian Shale, near Girvan, Mr Eobert Gray on, - 230 



Entomostraca, Marine, Mr D. Eobertson on, 227 



Ermine or Stoat {Mustela erminea). Notes on the habits of the, by Mr 



Eobert Gray, 129 



Eurypterus scouleri, from Dunse, Dr Young on, 378 



Falcon, Greenland {Falco groenlandicus), Dr Dewar on the, - - - 47 



Falcon, Greenland, Mr Eobert Gray on the, - - - - - - 254 



Ferns, Hardy, from the Lake District, Mr G. J. Combe on, - - - 167 

 Fishes of the Firth of Clyde, On the habits of some of the, by Mr John 



Eaton Eeid, 45 



