44 JOURNAL OF CONCHOLOGY, VOL. 12, NO. 2, APRIL, I907. 



var. oblong'a Jeffreys. — Woodwell, Silverdale ; June. Peat 

 drains, Storrs Moss, Yealand ; April and May. 



var. lutea Montagu. — River Lune above the aqueduct ; June 

 and July. 



var. lacustris Leach. — River Lune at Kirkby Lonsdale; August. 



var. patula DaCosta. — In the canal (exceptional form, a shell 

 approaching var. ovata plentiful) ; May. 



var. acuminata Jeffreys. — Leighton Beck, Hale; June to July. 

 Ditch above Halton ; April to May. 



var. ovata Drapamaud. — In a pond above Halton (exceptional 

 form, a shell approaching var. ovata plentiful) ; April to May. 



var. pulchella Roffian. — At the east end of the ditch at Lady's 

 Walk, Lancaster ; May to August. 



var. lineata Bean. — Fine at Tunstall in the beck near the village; 

 August. 



Fossil at Haweswater and Hale Moss. 



monst. sinistrorsum, — -One small shell, remarkably perfect, from 

 the Chara Marl at Hale Moss, 1906. 



L. palustris Miiller. — Common in some of the ditches, e.g., 

 Lady's Walk, Lancaster, and others to the west of the town ; in the 

 canal (small) ; at Haweswater ; also in the Leighton Beck at Hale. 



var. obesa Taylor. — Lady's Walk Ditch (exceptional form, the 

 type plentiful). 



var. elongata Moquin-Tandon. — Most of the Leighton Beck 

 specimens are of this form ; July and August. 



L. truncatula Miiller. — Common in many of the ditches. EUel 

 and Scotforth, near Lancaster ; Halton ; the Kelletts ; also noted on 

 Hale Moss; a few in the canal; Woodwell and Haweswater, Silverdale; 

 Cark (J. & M.). 



var. elegans Jeffreys. — Ditch above Halton (between Halton 

 and Slyne, at the Four-Cross-Roads). Specimens measure 12 m,m.; 

 April. 



Planorbis albus Miiller. — Recorded for the canal ; ditch Lady's 

 Walk, Lancaster ; Bankwell and Haweswater, Silverdale ; brook at 

 Cark (Jackson and Moore). 



Fossil at Haweswater. 

 P. crista L. — Common in a pond near Garstang station. Records 

 for this group of species may prove to be incomplete. 



monst. scalariforme. — One specimen at the above locality at 

 Garstang. 



Fossil at Haweswater. 



