NATURAL HISTORY SOCIETY OF GLASGOW. IXXXI 



those of the Anceus obtained in East Loch Tarbert, for which 

 Mr. Scott had proposed Nonnani as a specific name.* The 

 pereion, however, showed a decided constriction near the middle, 

 whereas the pereion of the Tarbert specimen was of nearly 

 <?qual breadth throughout. The pleon also differed in form 

 from that of the Tarbert specimen, and more nearly resembled 

 that of A. maxillarls. He was therefore not in a position at 

 present to refer this form to any described species, f 



Mr. James Steel exhibited specimens of Limncea iDahistris, 

 Miill., received from Mr. Marshall Reid, New Brunswick, a 

 Member of the Society. In the course of some remarks, Mr. 

 Steel stated that the species, which is very common in this 

 •country, has an almost world-wide distribution ; and he drew 

 attention to the fact that shells from New Brunswick did not 

 differ materially, either in size, colour, or thickness, from those 

 obtained in this country. 



Mr. A. Somerville, B.Sc, F.L.S., exhibited a sinistral specimen 

 of Limncea peregra, Miill., from Surrey ; a dextral specimen of 

 Clausilia rugosa, Drap., taken in Stirlingshire, and kindly lent 

 by Mrs. Skilton, Brentford, Middlesex, for exhibition to the 

 Society ; also various other recent and fossil reversed Gastropod 

 shells. He made some interesting remarks on the occurrence 

 ■of these abnormal forms in various genera, and referred to the 

 theories which have been advanced to explain their origin. 



Mr. Peter Ewing exhibited specimens of some Alpine Plants 

 from Forfarshire, Aberdeenshire, &c,t These included the 

 following species : 



Thldftpl alpestre, L., var. sylvestre, Jord. — Canlochan. 



Cerastiuni trlgijniun, Vill. — Lochnagar. 



Stixlfraga rivularls, L. — Lochnagar. 



Gnaphaliuin norveglcuin, Gunn. —Lochnagar. 



Midgeduun aljyinuin, Less. — Lochnagar. 



Eplpactls oralis, Bab. — N.E. Perthshii'e. 



Carex lagopiiia, Wahl. — Lochnagar. 



Alopecurns aljjuiiif}, L., var. TFflf.so/t/.— Canlochan. 



Lycopodkun annotlnmn, L.— N.E. Perthshire. 



Mr. Ewing also showed a specimen of Schmnus ferruglneuSy 

 L., a recent addition to the British Flora, discovered at Tummel- 

 bridge, Perthshire, by Mr. James Brebner, Dundee. 



The Chairman (Dr. Stirton) showed specimens of Carex 

 ^al'uia, Wahl., var. kattegatensls, a recent addition to the 

 British Flora, discovered by Mr. James Grant in the Wick 

 Burn, Caithness. 



Mr. A. Somerville, B.Sc, F.L.S., exhibited a small type of 



* Transactions, i. 374. 



t After further examination, Mr. Scott has referred the Greenock specimens 

 to the species obtained at Tarberc. 

 X Transactions, i. 286. 



