4 The Irish Naturalist, 



of the river Erne, was a good example. Even after a consider- 

 able storm during the night there was nothing washed ashore 

 to rejoice the collector. The Rev. W. S. Green, to whom I 

 have remarked this difference, considers that it may be largely 

 due to the fact that on the east coast the greater amount of 

 trawling in the deeper parts disturbs and tears up the objects 

 growing upon the sea-bottom, and then during storms they 

 are washed up on the shore. 



The limestone forming the cliffs is very fossiliferous, this 

 feature attracting even the most casual observer. The rock 

 seems in parts entirely made up of crinoid stems, some of 

 them exceptionally large in diameter. Other portions are 

 almost entirely composed QiProd2icttis giganteus, while various 

 fossil corals are in many places important components of the 

 rock. In the limestone on the north side of Rogy Bay, 

 towards Aughrus Point, the rock-pools are mostly deep 

 vertical hollows, always full of water, and crowded at the 

 surface with a great variety of red, brown, and green sea- 

 weeds. On pulling these aside one is rewarded with a most 

 lovely sight of variously and richl}^- coloured sea-anemones, 

 covering the sides and crevices of the rock. Especially 

 abundant were *' the Orange Disc Anemone," and " the 

 Snowy Anemone," now both regarded as varieties oi Heliadis 

 vemista^ Gosse ; also Bimodes gcniniaceus, E. and S., and in the 

 darker corners large specimens of Tealia crassicornis , Mull. 

 A few examples of Aplysia punctata, Cuv. were obtained here 

 also in the .shallower pools. 



The rocks from Aughrus Point to the Fair}^ Bridge are too 

 precipitous for any work to be done upon them ; but in the 

 latter place one can easily collect along the base at low water, 

 and also enter the Cathedral Cave near. We found this, 

 exposed to the full force of the waters of the baj^ to be 

 an extremely rich locality. The sand- tubes of Sabcllaiia 

 alveolafa, lyinn. form, with the rocks, small hollows in which 

 are little forests of zoophytes, such as Ttibiclaria larynx^ E. and 

 S., Obclia flabellata, Hincks, Cavipanularia ftexuo^a, Hincks, 

 and Flumularia setacca, Ell., and numerous smaller forms 

 growing upon these. Here was obtained the rare Halccium 

 te7iellum, Hincks, the first undoubted record for Ireland. 

 The surface of the rock also serves for the attachment of 

 crowds of yJ/^'/77?^^ cdidis, I^inn., and a search aniongvSt these 



