224 PROCEEDINGS OF THE 



of the sincere sympathy of the members in the bereavement which 

 they have sustained. 



SPECIMENS EXHIBITED. 



Mr Thomas Chapman, V.P., exhibited specimens of Papilio 

 adamastor and P. agamedes (West.), two species of rare butterflies 

 from Cape Coast Castle, Western Africa, and stated that although 

 these had been figured and described by Westwood as distinct 

 species, the variation was so slight that he thought they might 

 properly be combined in one. 



Mr George E. Paterson exhibited a specimen of the Green 

 Sandpiper, Helodromas ochropus (L.) He said that the Green 

 Sandpiper has a very wide range, being found from the Arctic 

 circle to Africa, and in Asia, as far east as China. Like most 

 other waders it breeds in the north, and only migrates south to 

 pass the winter in warmer countries. It is not uncommon in 

 England, especially in the Southern counties. In Scotland it is 

 more rare, but has occurred oftener on the east coast than on the 

 west. This seems to be the case with many of our rarer waders ; 

 the east coast is more in the line of their spring and autumn 

 migrations, which makes it only natural that more stragglers 

 should turn up there than on the west. This species has now 

 occurred three times on the Carron, in Stirlingshire. Mr Harvie- 

 Brown procured a specimen in August 1870, and in the autumn 

 of the following year again identified the species. This bird is 

 sometimes confused with the very closely allied species, the Wood 

 Sandpiper, by those who have not carefully examined the two 

 birds. They are, however, very easily distinguished by remember- 

 ing the very simple fact, that the Green Sandpiper has the shaft 

 of the first quill feather in the wing black, while in the Wood 

 Sandpiper it is white. 



PAPERS READ. 



I. — On a weathered Boulder of Carboniferous Limestone Shale: its 

 probable Geological horizon and contained Fossils. By Mr John 

 Young, F.GS., Vice-President. 



Mr Young stated, that on the recent excursion of members of the 

 Society to the Houston clay-field near Paisley, which contains the 

 remains of Arctic shells, he found embedded in the clay in its upper 

 portion, under the surface soil, a boulder of limestone shale, which, 



