(!3ttgmal Jirltclcs. 



CONCHOLOGICAL FIELD XOTES FROM 

 WENSLEYDALE. 



By William Denison Roebuck. 



In continuation of the holiday notes contained in my paper on the 

 conchology of Semerdale, I now give a list of the mollusca, which, 

 during the same fortnight of August (1882), were collected by 

 myself and friends in various parts of the main dale of Wensley. 



The localities visited by us were principally about Askrigg, 

 Aysgarth, Bolton, Wensley, Redmire, Middleham, and Jerveaulx, 

 Bainbridge being the point of departure for all our excursions. Near 

 Askrigg, our principal collecting grounds, which we visited several 

 times, were those picturesquely wooded portions of the valley of the 

 Sargill Beck (an affluent of the Yore, which joins it opposite the 

 debouchure of the river Bain), known as Whitfield and Mill Gills, the 

 former being situated about a mile further up the valley than the 

 latter. These two Gills we found very productive of mollusca, both 

 as regards species and individuals ; their geological structure is 

 favourable, and they present great diversity of surface, soil, and con- 

 ditions. On other occasions we collected about Aysgarth Force and 

 Bridge, and on both banks of the Yore at these places. AYe walked 

 from Bainbridge to Aysgarth, collecting as we went, our road leading 

 along what is called the ' Scar Top,' — which is the lowest of the 

 escarpments of Addleborough Hill — and then passing through 

 Cubeck, Thornton Rust, and Low Gill, to Palmer Flatts and 

 Aysgarth Bridge. Leaving Aysgarth, our line of route was to the 

 north, through fields, and past the Castle Banks to Bolton Castle, 

 the ancient home of the Scropes ; and on leaving the Castle we passed 

 through the village of Castle Bolton to Redmire Station. Having, 

 on more than one occasion, upwards of an hour to wait here for our 

 train, our time was well and profitably spent in the investigation of a 

 piece of waste land, situate at the point where the railway crosses the 

 Apedale Beck, and about a hundred yards or so from the station. 

 Another of our collecting expeditions had for its starting-point, 

 Wensley Railway Station, from which we walked first south to the 

 pretty and picturesque village, from which the whole dale derives its 

 name (Wensley), and then to Middleham, taking the road which 

 runs parallel with the river. Having duly inspected the Castle of 

 Middleham (where we did not neglect to secure some molluscan 

 souvenirs) we hired a conveyance and drove by way of East Witton 

 N.S., Vol. vm., Jax., 1883. 



