24 Fitzgerald : shells of harroCate and district. 



L. palustris (Miill.). — Occurs locally in one or two parts of 

 the district. Ponds near Ripley Station (F.T.W. & F.R.F.). 

 I also obtained a single specimen at Staveley July 19th 

 1888, (F.R.F.). Occurs sub-fossil on banks of Tutt at 

 Staveley. 



L. truncatula (Miill.). — Fairly common and generally dis- 

 tributed. Ponds between Nidd Bridge and Knaresborough. 

 Hartwith Dam (F.T.W.). Found near Staveley by Rev. W. 

 C. Hey, (Nat. 1884, page 280), no particular place is 

 mentioned ; I have not found it anywhere near Staveley. 

 It also occurs in a ditch behind Ripley Park Woods but is 

 very small, some of which I think are referable to var. 

 minor Moq. 



L. glabra (Mull.). — Rare and local. Very fine specimens in a 

 ditch between Roecliff and Staveley, (W. Denison Roebuck, 

 F.L.S. in Nat. 1884, page 280) ; near Shaw Mills (F.T. 

 W. and F.R.F.); Ditch near Ferrensby (W.N.). 



Ancylus fluviatilis Miill. — A'^ery common and generally dis- 

 tributed in most streams, attached to stones etc. Fullwith 

 Stream ; Stone Rings ; Killinghall ; Pond, Rudding Park ; 

 Oak Beck ; Ditches at Staveley ; River Tutt ; River Nidd ; 

 Spofforth. Also pond at Birstwith, (F.T.W.). 



A. fluviatitis var. alb id a Jeff^> — Rare. A few in stream near 

 Stone Rings. 



A. lacustris (L.). — Local. Staveley Ponds; and in a sheet 

 of water in Copgrove Park. Those in this water grow to 

 an extraordinary size. 



A. lacustris var. albida Jeff. — Abundant and very fine on 

 water lilies in Staveley Pond. 



Arion ater (L.). — Abundant throughout the district. Ripley; 

 Nidd Bridge ; Scriven ; Knaresborough; Follifoot; Spofforth; 

 Staveley; Copgrove; Pannal ; Weeton ; Rudding; Ribston; 

 Goldsborough ; AUerton ; and in gardens in the town. 

 Also at Birstwith (F.T.W.) and Hartwith (F.T.W. ). 



A. ater var. rufa (L.). — I have found this variety at Knares- 

 borough. 



J.C, vL, Jan., 1889. 



