270 STANDEN AND HARDY: MOLLUSCA OF OBAN AND LISMORE. 



H. crystallina Mull. — Taken very sparingly about Oban; 

 common at Ardbhan Craigs ; all very small and compact 

 in form (var. contractu Westl.). On Lismore it is plentiful 

 and very much larger. 



H. fulva Miill. — Not uncommon throughout the Oban district. 

 Plentiful, and unusually large on Lismore. 



H. nitida Miill. — A few fine specimens on shores of Lochan 

 Dubh, close to the water's edge. Fairly common on wet 

 rocks on Lismore. 



Helix rotundata Miill. — Not uncommon to the South of 

 Oban, but rare on the North Side, where, however, some 

 unicolourous specimens were taken — a variety we have not 

 observed before (var. nifiila Moq. ?). Several specimens 

 of variety alba Moq. were found under moss-covered stones 

 at Ardbhan Craigs. On Lismore the type is abundant, 

 very large, and prettily marked. 



H. pygmaea Drap. — A few amongst moss and on dead sticks 

 between the "Dog Stone" and DunoUie Castle; and 

 amongst moss on Lismore. 



H. lamellata Jeff. — Several specimens from a pile of moss- 

 covered debris which had fallen from the cliffs at Ardbhan 

 Craigs. They are very small but adult, and much eroded 

 at the apex. 



H. aculeata Miill.— Common in the pine woods at Ardbhan 

 Craigs, under stones ; several specimens of variety albida 

 Jeff, taken on a fungus-covered rail. A few amongst dead 

 sticks around Dunollie, and under dead branches in several 

 parts of Lismore. 



H. pulchella Miill. — Scarce. Two dead shells near Dunollie, 

 and a few alive at Ardbhan Craigs, all type. On Lismore 

 it is more plentiful^ but all we found were variety costata 

 Mull. 



H. nemoralis L. — Not uncommon about Oban, and on Lis- 

 more. Some very richly-coloured and unusually banded 

 forms occur in both localities. The hot weather had driven 



J.C, vU., Oct. 1893. 



