li 



PKOCEEDINGS OF THK MALACOLOGIC.VL SOCIKTY. 



with these phints in prc-Ghicial times, and has there maintained itself 

 chiefly win s>- to the abundance and luxuriousness of the lichens and 

 livevworts wliich cover the rocks, in tlic fissures of which the slug 

 remains secluded during dry weather. 



In a recent paper on the slugs of Ireland, ' I have drawn_ attention 

 to the remarkable instance of protective colouring which is seen in 

 Geomalacus mamlosus, as it rests among the lichens. Its natural food 

 seems to consist chiefly of these and of liverworts, one of the 

 commonest species of the latter being Fmllania dilatata. 



But to return to the actual distribution of the species in Ireland. 

 I have discovered it during the past few years in a number of places 

 which I have indicated by underlining the names of the x^laces on the 

 accompanying map. 



I found it south of Valentia Island in the extreme west of Ireland 

 at Dariynane from sea-level up to an elevation of 1000 feet, and still 

 further south at Castletown, Berehaven. At the Tunnel on the 

 Kenmare and Glcngariff road it was first discovered by Mr. Scully at 

 a height of 1000 feet above sea-level, while at Glengariff itself it 

 occurs down to the water's edge, and this is the locality where it may 

 be obtained in quantity within easy reach of one of the most delightful 

 summer resorts in the British Islands. 



» Sci. Trans. R. Dublin Soc. iv. pp. 513-G2. 



