DEAN : LAND AND FRESHWATER SHELLS OF MORECAMBE AND DISTRICT. 37 



V. radiatula Alder. ^ — Occurs sparingly and is somewhat local. 

 Lancaster, along the canal margins ; Warton ; Silverdale ; Arnside 

 Knott. 



Zonitoides nitidus Miiller. — Frequent along the canal margins 

 north and south of Lancaster. Specimens taken in the summer 

 months are usually immature ; this, however, may be said of most of 

 the Zonitidse. 



Z. excavatus Bean.— -A decidedly local and scarce species. 

 Caton, near Lancaster (R.S.), 1887 ; Dolphinholme Bottom in Lower 

 Wyresdale ; Scorton, near the Grizedale Brook, alt. 400 feet. These 

 three habitats are all similar in character and may be worthy of a 

 brief description. The defile through which the river or stream flows 

 at these points is somewhat precipitous and well wooded. The shells 

 are under the mossy stones, and at the roots of the male fern, where 

 this plant occurs. The Dolphinholme and Scorton localities are in 

 immediate proximity to the moors mentioned in the preface. 



Euconulus fulvus Miiller. — Well distributed throughout the 

 district. Wyresdale; Lancaster; Caton (R.S.), 1887; Silverdale; 

 Grange-over-Sands (R.S.), 1897 ; Higher Newton ; etc. 



Arion ater L. — The typical form is exceedingly common through- 

 out the district. One or two outlying stations need only be men- 

 tioned — Dolphinholme ; Abbeystead ; Kirkby Lonsdale ; Hampsfell 

 Hospice, Grange-over-Sands, alt. 727 feet; Higher Newton. 



var. alba L. — White Soar, Haweswater, Silverdale (J.W.J.), 

 1904; Eggerslack Wood, Grange-over-Sands. 

 var. succinea Miiller. 



sub-var. aurantia {vide Taylor's " Monograph "). — Arnside 

 (H. Beeston), 1906. 



A. intermedius Normand [=minimus Simroth]. — In flower of 

 Oxalis near Gibraltar, Silverdale; Eggerslack Wood, Grange (both 

 records J-W.J.), 1905. 



A. hortensis Ferussac. — Apparently well distributed, and very 

 abundant in some localities. Wyresdale ; Dolphinholme ; Lancaster, 

 common on the canal margins ; Grange-over-Sands (R.S.), 1897 ; 

 Silverdale ; Arnside. In the autumn, numbers of these slugs will be 

 found on the underside of decaying sycamore leaves; Mr. H. Beeston, 

 of Havant, drew my attention to this last August. 



A. fasciatus Nilsson \=bourguignaH Mabille].— Grange-over- 

 Sands (R.S.), 1897 {Arion circumscriptus) . 



Punctum pygmaeum Drapamaud. — Appears to be generally 

 distributed, but is somewhat local. Lancaster (David Dyson), 1850 ; 

 Caton and Brookhouse ; the Yealands ; Silverdale (J.W.J.), 1904; 

 Grange-over-Sands (R.S.), 1897. Odd specimens only in some local- 

 ities, probably overlooked on account of its small size. 



