268 STANDEN AND HARDY: MOLLUSCA OF OBAN AND LISMORE. 



found extremely interesting, as his hunting-grounds he compara- 

 tively near our own, and he records four species we did not get, 

 viz. : — Arioft siibfusciis, Hyalinia excavaia, Helix asj>ena, and 

 Ancylus fiuviatilis. 



The following list of species found is not without interest, 

 and whilst affording a fairly good general idea of the Molluscan 

 Fauna of the district examined, will also serve as a useful basis 

 for future collectors to work upon :— • 



Arion ater L. — Common wherever we searched in the Oban 

 district, and showing a most remarkable variation in colour. 

 Brown, reddish, slaty-grey, yellowish, and beautiful pink or 

 lilac varieties were not uncommon. On Lismore, though 

 equally plentiful, none but jet-black examples were found, 

 and these chiefly under dried cowdung or sods on sides of 

 ditches. 

 A. hortensis Fer.— A few in the pine woods at Ardbhan 

 Craigs. Much more plentiful on Lismore, at the base of 

 garden walls, and near some old ruins. 

 A. circumscriptus Johnst. — Far more common throughout 

 the Oban district than the preceding species. Only one 

 specimen was found on Lismore. 

 Limax maximus L. — Pv few medium-sized specimens occurred 

 in a wood behind Oban Railway Station, and one on an old 

 garden wall on Lismore. 

 L. marginatus Miill. — Very abundant on elms and beeches 

 in woods behind Oban Station, chiefly in tufts of Ortho- 

 tridiuin phyllaiithei/ium, which grows luxuriantly on the 

 trees. The trunks of the trees were covered with their 

 slime-tracks in many cases as far up as one could see. Mr. 

 Heathcote climbed to the topmost branches of a very tall 

 elm, and found the tracks all the way up, extending along 

 the outlying branches, and came across many of the slugs 

 hiding in the crevices of the bark. A few Avere found 

 under stones at Ardbhan Craigs, but none on the pine trees. 

 Only one was found on Lismore, under a fallen tree. 



J.C, vii., Oct. 1893. 



