Clare Island Survey — Land and Fresh-water Mollv sea. 23 15 



List of Mollusks of Clare Island. 



Limax arborum Bouch.-Chant. — Two distinct colour-forms of this slug are 

 to be met with. One, probably var. macidatu, Roebuck, is rather dark, 

 and is covered with spots on the body in a manner very similar to the 

 young of L. maximus, but is distinguished at once from that species by 

 possessing the characteristic shield-markings of the present slug. The 

 second form is referable to the var. nemorosa Baudon. Of the variety 

 alpestris, Less, and Poll., which prevails on Inishbofm, Inishturk, and on 

 Caner Island, no specimen was observed on Clare Island so far as I am 

 aware. 



[L. maximus L. — Occurs in the gardens adjoining Mr. M'Cabe's hotel near 

 the Harbour, but is certainly an artificial introduction.] 



L. cinereo-niger Wolf. — The nocturnal habits of this beautiful slug render its 

 presence often overlooked. In the present instance it is due to H. Wallis 

 Kew that I am able to record it from the island. Mr. Kew, having been 

 fortunate enough to discover its habitat at Kinnacorra, returned after 

 nightfall with Welch and Praeger, and the party had the satisfaction of 

 proving that the species was plentiful over a considerable area of the 

 rock-strewn heath-land which lies above Kinnacorra. No typical 

 specimens were taken, so far as I am aware, nor did any occur to me 

 when Praeger and I visited the locality in July, 1911. Examples sent 

 by Mr. Welch to W. Denison Roebuck, were referred by him to var. 

 maura Held. During my last visit, however, a single specimen was 

 taken in a small, disused limekiln above Lighthouse Cove, which might 

 almost be referred to the type, though the white dorsal stripe was scarcely 

 distinct enough. The majority of the specimens taken at Kinnacorra in 

 1911 were of an almost unieolorous greyish- brown, with a paler dorsal 

 stripe. None were full-grown, and none clearly showed the characteristic 

 markings of the foot-sole. One specimen was exceptionally handsome 

 from the fact that at irregular intervals large black spots nearly an eighth 

 of an inch in diameter were scattered over the body ; this is, perhaps, 

 the var. punctata, Lessona, recorded by J. W. Taylor from Sutherland 

 and Cork. The beautiful lineation of the shield of this slug, resembling 

 a "thumb-print," was strongly marked in all examples. An attempt 

 was made to discover the food of these slugs during a damp night in 

 July, 1911, by Praeger and myself, but we were unable to find them eating 

 anything. We observed, however, that whereas all the specimens of 

 L. arborum were seen on rocks, evidently feeding on lichens or algae, 

 L. cinerco-niger was always crawling on the short grass which grows 

 between the boulders and the clumps of taller vegetation. 



