756 Proceedings of the Royal Irish Academy. 



Here Lamellaria perspicua was abundant, and showed a remarkaWe 

 degree of variation, the appearance of different indi^dduals correspond- 

 ing to the particular species of Ascidian affected by them. 



Outside the harbour, near Murreagh Point, there is a small area 

 where boulders, many of huge size, lie scattered on the rocky shore. 

 This, in spite of its exposed position, we found a faiiiy good collecting 

 ground. Myriotliela phrygia, CorypheUa gracilis, and ^olidiella glauca 

 were the most interesting forms found, the two fii'st-named being 

 abundant. 



The rocky shores of Port Magee Channel were also explored to 

 some extent, but did not yield anything we had not already taken 

 near Knightstown. 



Banks and Spits of Sajsd and Gteatel. — These would probably 

 repay further investigation (by digging) than we devoted to them. 



Beginnis Spit is a bank of clean sand at the east end of the island, 

 where sand-eels, Arenicola marina, and other sand-haunting Polychaetes 

 may be obtained. 



Bally carhery Sands. — On the north side of Cahir river, opposite 

 the ruins of Ballycarbery Castle, are extensive sands. Myxicola infun- 

 diiulum is plentiful here at low-tide levels. ITany small hermits 

 {JEupagurus leriihardus) with good colonies of Sydractinia echinata 

 were also seen in the shallows. 



The Foot, a bank of muddy sand and gxavel with a few larger 

 stones, runs out fi'om Knightstown Breakwater-pier in a north-easterly 

 direction. Here in the spring ^olidia papillosa was plentiful (breed- 

 ing) ; Fecampia erytkrocephala and Leptoplana tremellaris (under the 

 stones in companies of four or five); Carinella superla (not usually 

 found between tide-marks), and other JN^emertines were found. 



Reenglas Spit is formed of mud or very muddy sand. There is a 

 good deal of scattered gravel, but much of its sui'face is covered with 

 Zostera. There ai'e also large shallow pools in which the pui'ple urchin 

 Strongylocentrotus lividus is to be seen in hundi-eds. They lie side by 

 side in great clusters on the JSTullipore-encrusted gravel which forms 

 the floor of the pools ; there is no attempt at burrowing, supposing 

 this species to be capable of such exercise. 



Ardcost Foot on the shore of Lough Mask. Mr. Gamble notes that 

 Synapta was obtained here by digging. 



The Submerged Peat-bog, near Ardcost, which is accessible at low 

 water of spring-tides, may be noticed here. A species of Pholas bui-- 

 rows in the peat, and also to some extent in the wood of the ancient 

 tree-stumps which still remain apparently in situ. Teredo navalis also 



