TOMLIN AND MARQUAND : SHELLS OF THE CHANNEL ISLANDS. 287 



Var. marginata Moq. — St. Sampson's, Guernsey. 

 Van lamarckii Kal. — A light form from Saints' Bay, Guernsey, 

 was so named for us by Mr. CoUinge. 



A. hortensis F6r. — Common everywhere. 

 A. subfuscus Drap. — St. Sampson's, Guernsey. 

 A. circumscriptus Johnst. — St. Sampson's, Guernsey. 

 Helix rotundata Miill. — Common in Jersey, Sark, and Guern- 

 sey. Rather rare in Alderney. 



Var. minor Jeffr. — Guernsey (Jeffreys). 

 Var. pyramidalis Jeffr. — Moulin Huet, Guernsey. Sark. 

 H. rupestris Drap. — Very rare in Guernsey. On walls at Grande 

 Havre, Vale. 



H. pygmaea Drap. — Jersey (Duprey). Guernsey, taken at Moulin 

 Huet, Grande Mare, Bordeaux, King's Mills, and the Gouffre ; prob- 

 ably not uncommon, but easily overlooked. Clanque, Alderney. 



H. aculeata Miill. — Jersey (Duprey). St. Andrew's, Guernsey ; 

 one specimen in a decaying fungus. 



H. aspersa Miill. — The type very abundant everywhere except in 

 Sark, where the thin variety is quite predominant. 



Var. tenuior Sh.— This is an extremely thin and transparent 

 form, smaller and darker than the type, not found in England. It is 

 particularly plentiful in Herm, Sark, on the cliffs of Alderney, and the 

 south coast of Guernsey. Has not been recorded from Jersey, but 

 no doubt it occurs there. 



Var. minor Moq. — Rather common both in the typical and the 

 tenuior form. A Herm specimen measures only 19 mm. each way, 

 and one from Petit Bot Bay, Guernsey, and another from Clanque, 

 Alderney, 21 mm. 



Var. conoidea Pic. — Moulin Huet, Guernsey; Braye Bay, and 

 Mauney, Alderney. A small specimen of this variety measures 23mm. 

 in height by 19 mm. broad. 



Var. zonata Moq. — Rare in Guernsey and Herm ; more com- 

 mon on the cliffs of Alderney. 



Var. exalbida Mke. — Bordeaux Harbour, Guernsey, rare. One 

 specimen near Fort Tourgis, Alderney. 



Var. virescens Moq. — This occurred very rarely in 1887 to Mr. 

 W. H. Heathcote and one of ourselves near Bordeaux Harbour, 

 Guernsey. The shells were extremely thin and fragile, of moderate 

 size, and of a beautiful light greenish colour after the animal had been 

 extracted. 



H. nemoralis L. — -Common in all the islands, except Alderney, 

 where it is rather rare ; usually with red or yellow ground colour ; a 

 large specimen measures 23 mm. by 19 mm. 



