l68 JOURNAL OF CONCHOLOGY, VOL. 9, NO. 6, APRIL, 1899. 



the Montagu Collection to this Journal in 1879. 1 Both Sowerby and 

 Jeffreys figure this species in their supplementary plates, but not well. 

 Cioniscus unicus Mont. — Living in sea-weeds at low-tide mark, 

 and dredged dead down to 95 fathoms. Jersey (Duprey and J.T.M.); 

 Scilly (Burkill and J.T.M.); Loch Boisdale, 17 — 70 f., and Sound of 

 Sleat, 80 — 95 f. (Somerville and J.T.M.) ; W. Sutherlandshire 

 (Baillie) ! Sark and Herm ; St. Ives ; Falmouth and Helford ; Skeg- 

 ness ; Southport; Caldy Island and Tenby; Pendine ; Harlech; 

 Connemara; Mayo; Sligo ; Portrush ; Portmarnock ; Oban, 25 f. ; 

 Vatersay Sound, Barra, 5 f. ; W. Orkneys, 45 f. Raised beach at 

 Shewalton, Ayrshire (Scott) ! 



I have a specimen from Jersey, 1*5 lines in length, and fragments 

 of others which must have been two lines. Some examples are very 

 slender. 



Aclis ascaris Turt. — Jersey, Sark, and Herm; Scilly Isles; St. 

 Ives and Porthcurnow ; Eddystone ; Dawlish, Torbay, and other 

 parts of South Devon ; Lancashire coast ; Skegness ; Connemara ; 

 Mayo; Sligo; Loch Inver, 25 f. ; Dornoch Frith. 



Some specimens have a decided umbilicus ; others have a varicose 

 rib on the last whorl ; and in a few rare instances an example will be 

 met with that runs very close to an immature A. supranitida. 



A. supranitida S. Wood. — Jersey (Duprey and J.T.M.) ; Scilly 

 Isles (Smart and others) ; Dawlish ( Webster) ! Jersey ; Herm ; 

 Borough Island ; Torbay; Babbacombe Bay ; Harlech; Aberdovey; 

 Lancashire coast, especially at Southport, where it is not uncommon 

 with A. ascaris ; Skegness ; Mayo and Sligo ; Bundoran ; Portmar- 

 nock ; Loch Inver, 25 f. 



This pretty shell is extremely variable in size and sculpture, some 

 specimens from the same locality being three or four times the size of 

 others ; but they are not often met with of the size given by Jeffreys. 

 The largest I have are from Aberdovey, N. Wales, and exceed a 

 quarter-of-an-inch in length. Jeffreys' plate figure differs from his 

 generic one ; the latter is right, but the former has the suture too 

 deep and oblique, giving the shell a spindled appearance which it 

 does not possess. The animal has been re-described by Jeffreys. 2 



A. walleri Jeffr. — Dornoch Frith, W. Sutherlandshire, a single 

 specimen from shellsand ; West Orkneys, 45 f. Also Atlantic off 

 Scilly, 690 f, with var. minor Jeffr. (Porcupine) ! 



" The mouth in perfect specimens resembles that of Pherusa gul- 

 sonce" (Jeffreys) ; but it is not sinuated to quite the same extent. The 



t /. Condi., vol. 2, p. 1-4, 1879. 



2 Proc. Zool. Sac, May, 1884, p. 343. 



