22 16 Proceedings of the Royal Irish Academy. 



Onoba striata (Adams). (Bissoa. W. M. E. Frequent : living between 



tide-mai'ks ; shells taken, occasionally in abundance, in 14 hauls, 2-19 f. 

 Ceratia proxima (Alder). {Bissoa.) M. Rare: in 3 dredgings in 11 f., 14 f., 



and 19 f.. a total of 5 shells. 

 Cingula obtusa (Cantraine 1 ). (Bissoa. soluta.) W. M. Locally abundant: 



taken in 3 dredgings, 1 0-19 f., a total of 72 shells. One hving specimen 



between tide-marks at Portkilly, Clare Island. 

 C. semistriata (Montagu). (Bissoa.) W. M. E. Frequent and locally 



abundant : taken in 11 dredgings, 2-19 f., as many as 159 shells yielded 



by 1 haul in 10 f. off Light-house Cove ; living in 5 f., Inishlyre Eoads. 

 C. trifasciata (Adams). (Bissoa cingiUus.) "W. E. Eare ? Twice dredged off 



the island; once in 5 f. and again in 10 f., a total of 8 shells. Frequent, 



living, at low water, Portlea, Clare Island (G. P. Farran) : sparingly 



between tide-marks at Achill Sound (E. Welch), at Annagh Island, and at 



Mulranny. 

 Barleeia rubra (Montagu). W. Locally abundant; 75 perfect and 14 



broken shells taken in 5 f. off the Castle, '09, and 4 shells in 10 f. off 



Light-house Cove, '10. 

 Skenea planorbis (Fabricius). W. E. Frequent, but nowhere abundant, 



at low-water mark, Clare Island ; also at Annagh Island. Dredged in 



10 f. off Light-house Cove. 3 shells. 

 JefFreysia diaphaua (Alder). W. E. Eare ? One living example taken in 



4 f., Inishlyre Eoads, 1910. Sixteen living at low tide, Portlea, Clare 



Island, August, 1910 (G. P. Farran). 

 Adeorbis subcarinatus (Montagu). "W. M. E. Locally abundant: taken in 



8 dredgings, 2-19 f., sometimes in large numbers, 106 shells having 



been counted in a dredging in 10 f. off Light-house Cove. 

 Bittium rericulatum Da Costa). (Gerithium.) W. M. E. Frequent, living, 



between tide-marks, Clare Island, common in dredgings ; taken 15 times, 



2-19 f . One haid off the Castle in 5 f. gave 1 60 perfect and 108 broken 



shells. Abundant and of large size in the AVestport channel, where 



examples fully 16 mm. in length were dredged off the Scotch Bonnet 



in 2 f. 

 Trif oris perversa (Iamae). (Cerithiwm.) W. M. E. Common, though rather 



less so than the preceding species. Dredged 8 times, 4-19 f. One 5 f. haul 



off the Castle, Clare Island, gave 26 perfect and 101 broken shells ; 



another in 10 f. off Light-house Cove gave 132 perfect shells, of which 



3 measured 7 mm. in length. 

 Cerithiopsis tubereularis (Montagu). W. M. Frequent : dredged 4 times, 



5-19 f.. a total of 37 shells. 



