Roebuck : Conchological Notes, Wensleydale. 83 



Scar, in 1879, by Mr. Eobert Scharff; and at Aysgartli, in 1882, by 

 Mr. J. A. Douglas ; these observations (communicated to the Con- 

 cbological Society) not having been before published. Their records 

 are distinguished from my own by being enclosed in square brackets. 



\_Sp7icerium corneum, L. Was found in 1877, at Birk Rigg, three 

 miles from Hawes — H. Orowther.] 



Bythinia tentaculata, L. One dead specimen found in the horse- 

 trough at Jerveaulx Abbey. 



\_Planorbis carinatus, Miill. Birk Rigg, 1877 — H. Crowther.] 



\_Physa hypnorum, L. Birk Rigg, 1877 — H. Crowther.] 



Limncea peregra, Miill Common in a water-trough at Aysgarth 

 Bridge ; dead specimens were found in the horse-trough at Jerveaulx 

 Abbey. [Birk Rigg, 1877— H. Crowther.] 



L. truncatula, Miill. Very numerous in a shallow pool on a rock- 

 shelf, ten feet above the level of the stream below Mill Gill Force. 

 [Birk Rigg and Snaizeholme, 1877 — H. Crowther.] 



[/.. glabra, Miill. Birk Rigg, 1877— H. Crowther.] 



Ancylus fiimatilis, Miill. Very common with LimnrBa peregra in the 

 water-trough by the roadside at Aysgarth Bridge, and not uncommon 

 in the Yore, above and below Aysgarth. [Near Ulshaw Bridge, 

 1877— W. Nelson.] 



Jrion ater, L. The Black Slug. Common in Whitfield Gill ; 

 noted also on the grassy slopes below Nappa Scar, Castle Bolton, and 

 at Low Gill, near Aysgarth. 



A. Jiortensis, Fer. Noticed at Castle Bolton and in Gillfair Wood. 



Limax ogrestis, L. The Field Slug. Abundant on the waste ground 

 near Redmire Station, and at Middleham Castle; at Whitfield and 

 Mill Gills, and along the Scar Top, Bainbridge. 



L. arhorum^ Bonch-chant. Two specimens found crawling on the 

 eastern outer wall of Bolton Castle. [East Witton, 1877 — W, 

 Nelson.] 



X. maximiis, L. The Great Slug. One specimen seen at Whitfield 

 Gill. 



Succinea putris, L. The Amber Snail. Abundant on stems and 

 leaves of butterbur, in damp situations in the remotest recesses of 

 Mill Gill. [Birk Rigg, 1877— H. Crowther.] 



Vitrina pdlucida, Miill. The Glass Snail. A few immature 

 specimens noted on Lcyburn Shawl, and on the top of the Scar at 

 Scarth Nick. 



