NATURAL HISTORY SOCIETY OF GLASGOW. 289 



be produced by a different species of CyniiJS from that which forms 

 the Syrian galls. 



Mr Peter Cameron, jun., stated that the insect which produces 

 these galls is Cynips Ugnkola, a Continental species which was 

 introduced into this country about sixty years ago. It does not 

 confine itself to any particular species of oak, the galls having been 

 found on our native tree Quercus robur. 



Mr Donald T. Martin exhibited a small collection of Lepidop- 

 tera from Manilla, on which Mr Thomas Chapman made some 

 remarks. He stated that some of the moths were peculiar to the 

 Philippine Islands, but others of them, and a considerable number 

 of the butterflies, were generally distributed in the Eastern 

 Archipelago. 



Mr James Lumsden exhibited a pair of Hen Harriers (Circus 

 cyaneus), found breeding in the island of Arran in June last, and 

 observed that instances are recorded of these birds breeding in 

 immature plumage ; but it was singular to find the pair now shown 

 mated, the female being in adult plumage, while the male was in 

 that of the first year, without any trace of the grey feathers of 

 the adult bird. Dr Dewar, who had examined the specimens, 

 confirmed Mr Lumsden's remarks. 



Dr Dewar exhibited a specimen of the Glaucous Gull (Larus 

 glaucus), which had been forwarded to him in the flesh by 

 Captain Macdonald, a corresponding member of the Society. This 

 specimen was obtained on the west coast of the Isle of Skye, where 

 they are not frequently met with, being oftener seen on the 

 eastern coast, from the Shetlands as far south as Northumberland, 

 and frequenting the various firths from Cromarty to the Forth, in 

 search of food. 



Mr David Eobertson, F.G.S., exhibited specimens of Melobesia 

 agariciformis (Harvey), a rare alga, of which the geographical 

 distribution is the Atlantic and Mediterranean shores of Europe. 

 These specimens were dredged in company with the Eev. A. 

 M. Norman, in Roundstone Bay, on the coast of Ireland, in 

 one place only, on a soft, muddy, weedy bottom, in from two 

 to three fathoms of water, where it was found in some 

 abundance, but no vestige of it was seen anywhere else, 

 three or four large well-formed plants coming up in the dredger 

 at a time. Roundstone Bay is the habitat given by Dr 

 Harvey for this alga in his " Phycologia Britannica," more than 



