The Rock-pools of Bu7idora7i, 5 



well rewarded us. On one of the ledges overhanging a pool, 

 on the floor of which were abundant Plaice, almost undistin- 

 guishable from their resemblance to the colour of the sand, 

 we came across hundreds of the lovely Metridimn {Adinoloba) 

 dia7ithus, Ell., of the brown and white varieties. Exposed at 

 low water they hung vertically almost like so many shapeless 

 masses of mucus, each with a drop of water at the distal end. 

 Looping about amongst the Hydroids were numbers of the 

 Amphipod Caprella linearis, Linn. Tubularia laryjix, E- and S., 

 was especially the home of the Nudibranch Eolis coroiiata^ 

 Forbes, its rosy hues harmonising well with the light red 

 colour of the polypites. 



From the Fairy Bridge, Tullan Strand stretches for nearly 

 a couple of miles to the mouth of the Erne, and yielded very 

 little to us, but the sand-hills overlooking it would well repay 

 the entomologist. The shore towards Kildoney Point we 

 found unproductive, and then took our way to Coolmore, a 

 place from which accounts of collections in other branches 

 have already appeared in this Journal. Descending the Blue 

 Stairs we were disappointed to find the shore composed 

 largely of sandstone and limestone boulders derived from the 

 cliffs, and presenting a very meagre fauna. Going a little to 

 the south-west, however, we were again amongst the lime- 

 stone rock-pools with a great abundance of life. The con- 

 trast was most striking. Where the rocks were principally 

 sandstone they presented quite a barren aspect, and life 

 appeared impoverished, while a few yards further when we 

 got on to the limestone, the rock-pools were replete with a 

 luxuriance of animal and plant life, much as we had found 

 west of Bundoran. 



Dredging in Donegal Bay with the trawlers did not yield us 

 much. The bottom consists principally of sand, and the 

 dredge and trawl brought up little of what the fishermen 

 regard as refuse, but to the zoologist is a harvest. A day was 

 spent on the east coast of the promontory stretching between 

 M'Swyne's Bay and Inver Bay. Here the shore was again 

 rich in deep vertical rock-pools filled with weeds, such as 

 Fiictcs, Laminaria, Ulva, E^iteromorpha, Bryopsis, Codiuin, 

 Cladophora, Chondrics crisptcs, Rhody??ie7iia, Coralli7ia offi- 

 ci7ialis, Lithotha77i7iio7i polyi7iorphu7}i, and other rarer forms. 

 Hundreds oi Metridiiuri {Acti7iolobd) dia7ithus, EH-, hung from 



