102 POLYSTICHUM ANGULARE IN NORTH LINCOLNSHIRE. 



Vertigo pygrnaea Drap. Very rare. Two examples, Malham, 

 1882. 



Vertigo alpestris Alder. Very local. Confined to a garden 



wall near Bingley, 1887. Not previously recorded for Yorkshire. 

 Vertigo substriata Jeff. Very local, having only been found at 



Shipley Glen in boggy ground, associated with Vertigo a?iti- 



veriigo, Pupa ringens, etc., 1887. 

 Vertigo pusilla Miill. Very rare. Two amongst moss, Malham, 



1882. 



Vertigo edentula Drap. Very local and somewhat rare. Marshy 



ground, Shipley Glen, several, 1887. 

 Balea perversa L. Common on the limestone. Malham, 1882 ; 



Gennet's Cave, 1882 (W. D. Roebuck) ; Kirkby Malham, 1887. 

 Clausilia rugosa Drap. Common and generally distributed. 



Abundant on limestone rocks, Malham ; on silurian rocks, 



Malham Moor, 1883 (Roebuck and Butterell) ; Airton to 



Gargrave, 1883 ; near Skipton (R. Scharff) ; Bingley, Gilstead, 



Apperley, Idle, Calverley. 

 Var. dubia Drap. Up to the present time has only been found 



on limestone. Malham, 1882; Gordale and Airton, 1887. 

 Clausilia laminata Mont. Very rare. Rocks near Skipton, 1882 



(VV. Whitwell). 



Cochlicopa tridens Pult. Generally distributed. Beckfoot Lane, 

 near Bingley, 1882 (E. R P. Butterfield) ; bog, near Ingrow; 

 Buck Wood, Thackley ; Red Beck, Heaton, near Saltaire. 



Cochlicopa lubrica Miill. Common and generally distributed 

 throughout the district, from the source of the Aire to the Leeds 

 borough boundary. 

 Var. lubricoides Fer. Malham, 1882; Saltaire, 18S7. 



Carychium minimum Miill. Common in suitable locaUties 

 throughout the district. Gargrave, Bingley, Shipley Glen, 

 Frizinghall, Idle, Nab Wood, Saltaire, Calverley. 



The total number of species enumerated in the list is 93. 



NOTE—CRYPTOGAMIA. 



Polystichum annulare in North Lincolnshire.— This fern, new to North 

 Lincoln, has been found by Miss wSusan Allett, of Tothill, in a hedgerow in the 

 parish of Withern. Dr. F. Arnold Lees identified the specimen, a frond of 

 which was sent him through me. — Jas. Eardley Mason, Alford, Feb. 6th, 1888. 



Naturalist, 



