Clare Island Survey — Marine Mollusca. 22 21 



Philine aperta Linne. W. M. E. Local. Very fine specimens, one fully 

 60 mm. long, were taken drifting in with the flowing tide off Annagh 

 Island in May, 1910 : also taken, living, in 4dredgings in the bay, 6-16 f. 



P. scabra (Midler). W. M. Bare : 4 shells taken, one in each of 4 hauls 

 in from 10-14 f. 



P. catena (Montagu). W. M, Eare: dredged 4 times, 10-19 f., 8 shells 

 in all. 



P. quadrata (S. Wood). | M. Both very rare, only one shell of each species 



P. punctata (Clark). I taken in a haul off Mulranny in from 5J— 11 f. 



Limacina retro versa (Fleming). {Spinalis.) W. M. Bare. The delicate 

 shells of this pelagic species which are occasionally cast up in large 

 quantities on the western shores of Ireland, occurred sparingly, but in 

 perfect condition, in 2 dredgings, 8 shells in 1 4 f . in mid-bay, and 2 in 

 10 f. off Light-house Cove. 



Aplysia punctata Cuvier. W. M. Eare ? One specimen taken in 7 f. off 

 Granuaile's Castle, August, '09; 6 larger specimens, closer inshore off 

 the Castle, in July, 1910; and 1 in 11 f. in the bay in August, 1910. 



Pleurobranchus plumula (Montagu). W. E. Occasional at low water under 

 stones ; 2 specimens at Portkilly, Clare Island, 1 at Scotch Bonnet, and a 

 fourth at Inishimmel. 



Runcina coronata (Quatrefages). {B. Hancocki.) W. Local. Some thick 

 slabs of Lithophyllum incrustans taken from low-tide rock-pools at 

 Portarriv, Clare Island, on the 22nd July, 1910, and left over night in a 

 dish of sea-water in the laboratory, yielded 16 specimens of this species 

 when examined next morning. Euncina probably occurs all round the 

 Irish coasts. It is now on record for Dublin, for Valentia Harbour, and 

 for Inishbofin, in addition to the above Clare Island station. 



Sub-Order Ascoglossa. 



Hermaea bifida (Montagu). W. Very rare: one living specimen 9 mm. 

 in length was taken by Mr. A. D. Cotton in July, 1909, in a low-tide 

 pool near the Castle, Clare Island. The general colour of this specimeii 

 was so deep a chocolate as almost to obliterate the dendroid markings. 



H. dendritica (Aid. and Hanc). W. Abundant at low-water mark all 

 round the S. and E. coasts of Clare Island, as at Portkilly, Portarriv, 

 Portlea, &c, July 22nd-24th, 1910, always occurring on Codium- 

 tomentosum, and so closely assimilating in colour with the varied tones of 

 green assumed by the seaweed as almost to defy detection. The presence 

 of the animal was usually betrayed by the creamy spawn-clusters 

 deposited chiefly round the base of the main stems. No less than 93 



