296 THE SCOTTISH NATURALIST 



Adair, before 1891); Port Logan, September 1890 (W. Evans); 

 Stranraer, September 1890 (id.); var. ovata in Malzie Burn, 

 Corsemalzie, two, 2nd May 1909 (Jack G. Gordon); var. 

 lagotis. Loch Lennows, Mochrum, one, small, 12th May 

 1909 {id.) ; var. i/iicrocephala, Malzie Burn, Corsemalzie, two 

 on stones, 9th May 1909 {id.); var. microcephala., on weeds 

 in pool on Whitedyke Moor, Corsemalzie, one, 21st May 1909 

 {id.) ; Loch Chesney, var. microcephala, three at bottom, 

 on stone, same date {id.); Low Moor, Corsemalzie, numerous, 

 adult and young, in ditch, ist September 19 16 (Jack G. 

 Gordon). 



Physa fontinalis. 



Ardwell, several, i5lh September 1890 (W. Evans); Loch 

 Lennows, a few, loth June 191 1 (Jack G. Gordon). 



Phviorbis albus. 



Loch Chesney, Mochrum parish, six of various ages and 

 sizes on stones under water, 21st May 1909 (Jack G. 

 Gordon). 



Plafiorbis conforfiis. 



Loch Chesney, three on stones under water, 21st May 1909 

 (Jack G. Gordon); Quhillart Moor, Corsemalzie, one, small 

 30th August 19 16 {id.). 



Ancylus fluviatilis. 



Piltanton Burn, near Stranraer, September 1890 (W. Evans) ; 

 Dunskey Wood, Portpatrick, a few, i8th August 1909 (J. F. 

 Musham) ; Loch Chesney, three small examples, 21st May 

 1909 (Jack G. Gordon); three larger specimens, in Malzie 

 Burn, Corsemalzie, 24th May 1909 {id.). 



Bythinia tentaculata. 



Malzie Burn, Corsemalzie, a few eroded examples on stones, 

 gth May 1909, and one very young, 30th August 19 16 

 (Jack G. Gordon); Loch Elrig, Mochrum parish, 17th June 

 1909 {id.). 



Valvata piscinalis. 



Loch Lennows, Mochrum parish, a few small eroded specimens 

 on the bottom, 12th May 1909 (Jack G. Gordon): Loch 

 Chesney, a few small and eroded examples on the bottom, 20th 

 April 1910 {id); Garlieston, common in mill-dam, 28th May 

 1912 (Edward Collier); Portyerriock in Whithorn, 28th May 

 191 2 {id.). 

 Unio margaritifer. 



Malzie Burn, Mochrum parish, not uncoauuon, yth May 1909 



