Mr. J. G. Jeffreys on some Bintish Shells. 311 



Rissoa abyssicolay Forbes. In the same locality as the last. 



Eulima distorta {Melania distorta, Desh.), Phil. vol. i. p. 158. 

 t. 9. f. 10. Oban and Loch Fyne. 



This species was also found many years ago by Mr. Clark at 

 Exmouth ; and several other localities in Great Britain are now 

 known for it. 



Chemnitzia rufescens, Forbes. Turrit ella indistincfa, Flem. 

 Brit. An. p. 304. Melania scalaris, Phil. vol. i. p. 157. t. 9. f. 9 ? 

 From the same locality as the last. I obtained it in 1843 and 

 1844 in various parts of the western coast of Scotland. 



Eulimella (Forbes) crassula,M.d\. and Conch, J. E. Mac Andrei, 

 Forbes in Ann. Nat. Hist. vol. xiv. p. 412. In many parts of the 

 western coast of Scotland. 



Eulimella gracilis. Shell elongated, of a rather thin texture, 

 smooth, glossy, white. Volutions ten, gradually increasing in 

 size and tapering to a point : they are rounded and well-defined 

 by the line of separation. Aperture oval, angulated and slightly 

 channelled at the base. Peristome not folded on the pillar. Um- 

 bilicus none. Length 2%ths of an inch ; breadth gV^h. 



Several specimens of this beautiful and very distinct shell were 

 found by Mr. Barlee at Oban, and since in Loch Fyne. 



Pleurotoma variegatum, Phil. vol. i. p. 19. 1. 11. f. 14. A single 

 specimen of a shell which appears to be the above species occurred 

 to me at Loch Carron in 1843. It differs from PL purpureum in 

 the texture of the shell being thinner, the volutions more rounded, 

 and the longitudinal ribs more numerous. 



Pleurotoma Boothii, Smith in Wern. Mem. Oban and Skye. 

 This species is scarcely distinguishable from PI. lineare. I ob- 

 served specimens in Mr. Metcalfe^s collection of shells from Herm, 

 one of the Channel Islands, mixed with the other species. 



Pleurotoma scabrum. Shell oblong, yellowish white. Volutions 

 six or seven, tapering and rounded, having each marked with 

 twelve rather oblique longitudinal ribs, which are crossed by 

 about the same number of raised transverse strise which produce 

 tubercles at the point of junction, and are of a purplish brown 

 colour. Suture rather deep and well-defined, showing the gra- 

 dual formation and prolongation of the slit. Aperture oblong. 

 Canal short. UmbiUcus none. Length ^%ths of an inch; 

 breadth /^jths. 



Two specimens of this shell were found by Mr. Barlee at Oban. 



It differs from PI. lineare in the volutions being more taper- 

 ing, and generally in its more slender form, and in the ribs and 

 transverse strise being sharper and more elevated, giving the 

 shell a scabrous appearance. 



Pleurotoma brachijstomum, Phil. vol. ii. p. 169. t. 26. f. 10. 

 Oban, Loch Carron and Skye, as well as in Bantry Bay. This 



