ii8 jnicmurtrie: eigg shells. 



a raised spire and comparatively small umbilicus. Charac- 

 teristic specimens of the variety are frequent. 

 Helix itala var. leucozona Moq. This variety occurred 

 at all the localities, and is not rare. The most character- 

 istic specimens are entirely dark brown above, only 

 sometimes shewing a very thin white line at the suture. 

 The periphery is always white. When alive, the shell 

 appears black, from the dark colour of the animal. Be- 

 neath, there may be several lines, or one broad band. 

 Intermediate forms are paler. A very thin specimen 

 occurred in the corrie open to the sea at the south end. 

 Helix itala var. alba Charp. This variety is also common. 

 It is of a uniform dull slightly yellowish white, but occa- 

 sionally has translucent lines. 

 Helix itala var. hyalozonata Ckll. Less common than 

 the preceding, but still not rare. It is of a pure clear 

 white, with hyalozonate lines. Very thin specimens of the 

 clear white hyalozonate form occurred with the thin forms 

 of H. arbiistonim at the south end in the corrie open to 

 the sea. 

 Helix rot un data Miill. Under stones at soutli end, near 



the sea. 

 Helix acuta Miill. Common among herbage on glebe sliore, 

 Lagg shore, etc. The prevailing forms are two : — 



(i) Of a uniform opaque white, with the band on the 



lowest whorl. This is common. 

 (2) A form approaching the var. strigala, with one dark 

 band encircling the lowest whorl. 

 Among hundreds of specimens taken in Eigg, the 

 var. bizona did not occur, though it has been re- 

 corded for lona. 

 Helix acuta var. strigata Menke. Occurs with the species, 

 and with. every gradation to the normal type. Of this also 

 there are two forms, one or other of which might be re- 

 garded as a distinct variety : — 



J.C, vii., Oct. 1S92. 



