CONTENTS. XI 



Pagb 



Silurian Fossils of the Girvan Valley, Mr Robert Gray on, - - - 101 



Skua, Pomarine (Lestris pomarinus), Mr Robert Gray on the, - - 178 



Sparrow, Tree (Passer mow««'/M«s), Mr W. Sinclair on the, ... 85 



Sparrow, White-throated (Zonotrichia alhicollis), Notice of the occun-ence 



of the, in Aberdeenshire, by Mr W. C. Angus, cor. mem., - - 209 



(SipiVor&is, various species of, Mr John Young on, - - - - - 101 



Starling, Common (Sturnus viihjaris), Notes on the, by Mr Robert Gray, 13 



Synapta inhaerens, Mr D. Robertson on, ------ 73 



Terehellides slraemii, Mr D. Robertson on, - - - - - - 84 



Thysanopoda, Mr D. Robertson on, ..---.. 119 



Tomopteris scolopcndra, Dr John Grieve on, ------ 3 



Transmutation of Species, On the Darwinian Hypothesis of the, by Dr 



Scouler, ..._------- 47 



Trocjou resplendtns (of Gould), Notes on the Habits and Geographical 



Distribution of, by Mr Robert M 'Dowall, surgeon, Taboga, cor. mem., 137 



Urus, White, or Caledonian Ox (Urus scoticus), Dr Dewar on the, - 56 



Vascular Plants of Great Britain, On the distribution of the, more par- 

 ticularly those of the East and West of Scotland, by Mr James 

 Ramsay, .-----.----17 



Venus's Flower-basket (Euplectella aspergillum), Mr J. E. Somerville on, 380 



Virgularia mirahilis, Mr D. Robertson on, ------ 67 



Vole, Bank (Arvicola pratensis), Mr E. R. Alston on the, - - - 130 



Warbler, Marsh {Calamoherpe palustris), Mr WiUiam Hamilton on the, - 110 



Waxwing, Bohemian [Bombycilla garrula), Mr Robert Gray on the, - 165 



Windmillcroft Beds, Notes on the Botany of the, by Mr J. A. Mahony, 159 



Woodpecker, Great Sjjotted [Picus major), Mr William Lorrain on the, 230 



Woodpecker, Great Spotted, Mr Robert Gray on the, - - - - 378 



Writing Paper, Spots in, caused by copper, exhibited by Mr T. S. Hutcheson, 187 



Zoological Research, On the present character of, by Professor J. Young, 229 



Zoophytes from Dunbar, exhibited by Mr John Jeffray, cor. mem., - 142 

 Zoophytes from Girvan, Mr T. Anderson on, - - . . 126, 186 



Zoophytes from Peterhead, Rev. James YuiU on, - - - - 186 



