GLASGOW SOCIETY OF FIELD NATUKALISTS. 33 



that the Cadcler specimen is the variety described by Thomson, 

 and has the antennae seven-joiated, while the type has them 

 eight-jointed. 



Phyllotoma nemorata, Fall., and P. microcephala, King, taken 

 along with the above. 



A number of Cimhices. He remarked on the extreme variation 

 occurring in this group of saw-flies, and from his observations he 

 was led to the belief that the food-plant had a considerable 

 influence in causing this variation, as conjectured long ago by 

 Dahlbom. 



And he also exhibited the larva of a saw-fly in the act of casting 

 its skin, which it was prevented from accomplishing from the want 

 of a suitable surface to rest upon, thus showing the necessity of 

 breeding them in vessels with rough surfaces. He also mentioned 

 that he had found the galls of Andricus quadrilineatus at Cadder 

 Wilderness. 



By Mr. A. Watt — A specimen of Linncea horealis collected by 

 himself in Aberdeenshire. 



EXCURSION. 



Wemyss Bay. — Mr. J. Harvie reported, that from the very 

 unfavourable weather nothing could be done in dredging. He 

 stated that near Toward he had dredged a fine specimen of the 

 Sun-star, Solaster papposa ; the Spider-crab, Hyas araneus, Leach; 

 and the Hermit-crab, Pagurus Prideauxii, associated with the 

 Anemone Adamsia paUiata. ■ 



PAPER READ. 



Mr. E. M'Kay read a paper on the willows of the district. He 

 described their structure, and gave a minute description of the 

 characters by which they are separated into species and varieties ; 

 also mentioning the difiiculties to be overcome in the study of 

 them. He exhibited a collection of those he had gathered, includ- 

 ing, besides those already recorded, Salix acuminata, S. laurina, 

 S. nigricans, S. phyllicifolia, and S. triandra. He also exhibited a 

 branch of S. aurita, bearing both male and female catkins, and a 

 catkin with both male and female flowers. In the conversation 

 which followed, some remarks were made on the facilities offered 

 in this genus for cross fertilisation, and the difficulty of getting 

 perfectly distinct species. 



