138 JOURNAL OF CONCHOLOGY, VOL. 9, NO. J, JANUARY, 1899. 



According to Sars' description and figure, H. minuta Totten seems to 

 differ from this only in having convex whorls. 



Var. tumida Marsh. {J. Conch., vol. 7, p. 252). — Skegness; 

 Southport ; Aberdeen ; W. Sutherlandshire. 



Var. decollata Marsh, {ibid). — West coasts of Ireland and Scot- 

 land, and a few other places. 



Barleeia rubra Mont. — Scilly Isles; Achill Island; Mayo and 

 Sligo ; Freshwater West. 



The Pembrokeshire coast is the most northern locality I can vouch 

 for for this species ; all the more northern records are doubtful. 

 Jersey specimens are more conical, with an obtusely angulated base, 

 and occasionally this form is found elsewhere ; another has a deeper 

 suture with more convex whorls ; a dwarf or stunted form occurs in 

 many places with the type ; and a monstrosity, which is not uncommon, 

 has the peristome disconnected. Jeffreys' figure is too narrow through- 

 out, and the whorls too compressed ; but his generic figure is perfect. 

 The banded variety is more frequent on the west coast of Guernsey, 

 and the white one at Scilly. 



Jeffreysia diaphana Aid. — Achill Island. A variety occurs at 

 Guernsey which has a larger body-whorl and a shorter spire. 

 Sowerby's figure is a good one, but it should be glassy white instead 

 of brown. Jeffreys' figure is not like our shell, nor would his dimen- 

 sions suit it, and his generic figure is not much better. 



J. opalina Jeffr. — Scilly Islands, dredged dead (Burkill and 

 J.T.M.); Connemara; Oban; Barra in the Outer Hebrides. Very 

 abundant at Guernsey, but only half the length of Shetland specimens. 

 Fossil in the Belfast deposit (Praeger) ! 



J. globularis Jeffr. — Jeffreys' figure is not correct in outline; it 

 should be as Sowerby's, broader than long. 



Skenea planorbis var. trochiformis Jeffr. — Guernsey; Arran. 

 Var. maculata Jeffr. — Land's End ; Borough Island ; Torbay. 

 Var. hyalina Jeffr. — Scilly ; Land's End ; Borough Island ; 

 Torbay ; Portrush ; Shetland. 



A monstrosity is occasionally found in which the last whorl is dis- 

 torted, and sometimes separated, as in the freshwater genus Planorbis. 



Homalogyra atomus Phil. — Scilly Isles (Burkill and J.T.M.) 

 Dornoch Frith (Baillie and J.T.M.) ; Arran ; Iona ; Staffa ; Glenelg 

 Castle Bay, Barra. Also a single specimen from Holsteinborg, Green 

 land (" Valorous ") ! 



Var. vitrea Jeffr. — Jersey and Guernsey ; Killala Bay. 

 (To be continued). 



