Clare Island Survey — Marine Mollusca. 22 29 



Montacuta ferruginosa (Moulagu). W. M. Frequent : dredged 9 times, 

 5-19 f., valves only, which were taken in large numbers in 8 f. and in 

 14 f. The largest valve was 8 mm. in breadth. 



M. substriata (Montagu). M. Very rare: one valve taken in 19 f. 



M. bidentata (Montagu). W. M. E. Common ; taken in 12 hauls, 2-19 f., 

 living in 6 of these, in 2 f., 4 f., 10 i., 14 1., 16 f., and 19 f. Valves very 

 abundant in many hauls. 



Turtonia minuta (Fabricius). W. M. Frequent on the E. and S. shores of 

 Clare Island on rocks amongst Lichina and the variety incurvata of 

 the Common Mussel ; also in rock -pools on Cladophora and Enteromorpha. 

 Valves occasional in dredgings 8-14 f. 



Kellia suborbicularis (Montagu). W. M. E. Very frequent embedded in 

 Lithophyllum incrustans Fosl. in rock- pools on the E. and S. shores of 

 Clare Island, usually in association with Saxicava ; occasional at low 

 water, Dorinish and Scotch Bonnet, and dredged, living and dead, 

 in 11 hauls, 4-19 f. The largest specimen taken, a living one from 15 f., 

 measured 9 mm. x 8 mm. 



Lasaea rubra (Montagu). W. M. E. Abundant on rocks amongst Lichina 

 and dwarf Mussels on the E. and S. shores of Clare Island, and 

 occasional at Annagh Island. A few valves and pairs of valves were 

 taken in 3 dredgings, 8-19 f. 



Lepton squamosum (Montagu). M. E. This species is widespread and 

 apparently not rare in the Clew Bay area. The beautifully sculptured 

 valves occurred in 5 dredgings made in 1910 in from 2-19 f. In no case 

 was a living specimen obtained ; but the majority of the 22 valves taken 

 were quite fresh ; many of them were juvenile, and one had attached to 

 it a portion of the animal. The largest valve measured 11 mm. x 

 8 - 5 mm. 



Details of the 5 dredgings are as follows: off Scotch Bonnet, 2 f., 



1 valve ; off Inishlyre, 4 f., 1 valve ; in the bay, in 16 f., 6 valves and 



2 fragments, in 10 f., 7 valves, and in 19 f., 7 valves and 2 fragments. 



L nitidum Turton. W. M. Not infrequent: taken in 3 dredgings, 10-19 f., 

 in 1910, a total of 3 live specimens, 24 single valves and 1 pair of valves, 

 the largest (Var. c.onvexa and the type) measuring 2 mm. 

 The following are details of the 3 dredgings : — 



In mid-bay, 19 f. 1 living specimen of type, 5 valves of Var. convexa 



Alder., and 1 valve of Var. lineolata Jeffreys. 

 In 10-12 f., lj mile N.E. of Old Head, 1 live specimen and 10 valves 



of type, 1 live specimen and 8 valves of Var. convexa. 

 Off Light-house Cove, in 10 f., a pair of valves of Var. convexa. 



