604 Proceedings, of the Royal Irish Academy. 



The following is a summary of the results ohtained by Professor 

 Hadclon and Mr. Jacob, after a more detailed examination of a portion 

 of Berehaven : — 



West entrance (log No. 24). The otter-trawl brought up thirty- 

 two specimens of Echinus esculentus, mostly of large size, Echinocar- 

 dium flavescens, Lineus marinus. 



Erom IN'a-gias Point to Fort Point ; depth 6 to 4 fathoms ; bottom 

 sand, mud and a few broken shells ; dredges came up nearly empty, 

 contained only a few common Hermit crabs and shells. 



Erom Eort Point to Long Point ; depth 7 to 3^ fathoms ; bottom, 

 broken shells, various Nemerteans and other worms, Eolis coronata 

 on seaweed, &c. 



Erom Colt Pocks to a little N. of Drum Point ; depth about 8 

 fathoms ; bottom mud, with seaweed. ISTot much except a few Crus- 

 tacea and scallops. 



All the bottom to landward of the 5 fathom-line on the north side 

 between Dinish Island and Hornet Eock is extremely poor dredging 

 ground, consisting chiefly of rolled stones, with or without a coating of 

 seaweed. 



The channel included between the two 5-fathom lines has a uni- 

 form bottom of a dense adhesive mud, containing a few worms and 

 echinoderms. In certain spots life is more abundant, this being 

 notably the case in the 10-fathom depression, just off the "White 

 buoy at Yolage Pock, where, especially a trifle to the east, is a col- 

 lection of dead and broken shells which are often encrusted with 

 Palythoa. 



The following list will give some idea of the Eauna of this region 

 of Berehaven : — 



Ccelenterata — Several common Hydroids. Palythoa arenacea (?) and P. 

 sp. Echinodermata, Antedon rosaceus, Asterias glacialis, A. rubens, 

 A violacea, Amphiura chiajii, A. filiformis, Ophiocoma nigra, 0. 

 lacertosa, large size ; 0. albida, 0. affinis, Ophiothrix pentaphyl- 

 lum, Brissopsis lyrifer, large size ; Echinocardium flavescens, 

 Thyone fusus, T. raphanus, Ocnus lacteus, Synapta inhserens. 

 Vermes — Eurylepta vittata, Amphiporus pulcher (?), Lineus 

 marinus, Carinella annulata. 



The only Crustacea of any note were a small male of Nephrops nor- 

 vegicus, Lysianassa spinicornis, and a few Amphipods. 



Tunicata — Molgula occulta(?), Ascidia aspersa, A. mentula, Styela 

 grossularia, S rustica(?), Clavelina lepadiformis, Leptoclinum 

 maculatum, Morchellium argus, Diplasoma sp. 



Volage Eock to Hornet Eock (log. ]S"o. 25), depth about 5 fathoms; 

 bottom sand and mud. The otter-trawl brought up large numbers of 

 Antedon rosaceus and its stalked larvce. The two species of Amphiura 

 were common round Hornet Eock. Sphenotrochus wrightii. Eora- 

 minifera plentiful, of species which usually occur in shallow water. 



