FITZGERALD : SHELLS OF HARROGATE AND DLSTRICT. 29 



H. rufescens Pennant. — A too common species occurring all 

 over the district. Ripley ; Knaresborough ; Plumpton ; 

 Nidd Bridge ; Spofforth ; Rudding ; and Follifoot. Birst- 

 with (F.T.W.) and Hartwith Dam (F.T.W.). Those at 

 Nidd Bridge are very fine. Mr. Nelson writes some approach 

 the variety albida. I have since taken this variety on the 

 magnesian Hmestone at Nidd Bridge. 



H. rufescens var. rubensMoq. — Common along with the type. 



H. rufescens var. albida Moq. — As stated above. 



H. concinna Jeff. — Local and not numerous. Knaresborough 

 and Ripley. Common at Birstwith (F.T.W. ). 



H. hispida L. — Local, but. fairly common where it occurs. 

 Knaresborough (plentiful) ; Nidd Bridge ; Burnt Bridge ; 

 and Fullwith. Also Ripley and Copgrove (F.T.W. & F.R.F.). 



H. hispida var. subrufa Moq —Ripley (F.T.W. and F.R.F.) 



H. sericea Mull. — Local and rare. Near Hartwith Dam on 

 ivy and nettles (F.T.W.). 



H. caperata Montagu. — Common in some localities. Allerton, 

 under old trees ; Knaresborough ; Goldsborough ; Starbeck ; 

 Grimbald Crag ; and two near Plumpton. Also Birstwith 

 (F.T.W.). 



H. ericetorum Miill. — Local and rare. Near Birstwith, rare 

 (F.T.W.). One dead specimen, Grimbald Crag, June 1888. 



H. ericetorum var. instabilis Zgl. — Near Birstwith (F.T.W.) 



H. rotundata Miill. — Common throughout the district. 

 Birk Crag ; Plumpton ; Rudding ; Ribston ; Allerton ; 

 Harrogate; Pannal; Knaresborough; Hampsthwaite ; Rip- 

 ley ; Burnt Bridge ; Spofforth. Also Birstwith (F.T.W.). 



H. rotundata var. alba Moq. — Pannal (J. W. Taylor). 



H. pygmaea Draparnaud. — Not numerous, but occurs in suit- 

 able localities, i.e. among dead leaves and at the roots of 

 grass. Knaresborough and Nidd Bridge. 



H. pulchella Miill. — More numerous than the last named, 

 but still not common. Burnt Bridge ; Spofforth ; Knares- 

 borough ; and also one under a stone in Ripley Park. 



