ox THE MARINE ZOOLOGY OF THE IRISH SEA. 319 



THE DREDGING EXPEDITIONS. 



The Committee have organised the following expeditious since the last 

 report : — 



I. August 22. — The Committee hired the steam trawler ' Albatross ' 

 for dredging from Port Erin to the south and west, round the Calf Island, 

 as follows : 



1. Off Halfway Rock and Bay Fine, half a mile from shore, 15 fathoms; 

 bottom small gravel and broken shells. Conspicuous animals :* A7iten7m- 

 laria ramosa, Sertularia abietina, Aglaophenia myriophylluvi^ Cellaria 



Jistulosa, Sarcodictyon catenatum, Porania jndvillus, Galathea intermedia 

 (with the Bopyrian parasite Pleurdcrypta intermedia), Ascidia plebeia, 

 A. meniula, Cynthia morus. 



2. From off Kitterland to Halfway Rock, half a mile off, 17 fathoms ; 

 bottom stones and large shells, with Cliona celata (massive form), OjM- 

 opholis acnleata, Ascidia venosa, Cynthia morus. 



3. North of Kitterland, three-quarters of a mile off, 18 fathoms ; 

 Ijottom small gravel and shell sand, with Sarcodictyon catenatum, Lepralia 

 edax, Cellepora jmmicosa, Echinocyamus j)usillus, Ophiocoma nigra, Xantho 

 tuberctdatus, Inachus dorsettensis, Ebalia Cranchii, Ascidia mentida, A. 

 plebeia, Perophora Listeri, Capulus hungaricus, Murex erinaceus. 



4. Off the north-west corner of Calf Island, a quarter mile off, 17 

 fathoms ; bottom stones ; very many Ophiocoma nigra, with Stichaster 

 roseus, Ophiothrix fragilis, Ocnus brunneus, Lineus longissimus, Cynthia 

 morus. 



5. South end of Calf Sound, half a mile off, 15 fathoms ; rough hard 

 ground, probably rock in situ. Several large stones came up, covered 

 with Sertularia abietina, encrusting polyzoa, and Ciona intestinalis. 



6. North-west of Calf Island, half a mile off, 18 fathoms ; bottom 

 stones with many Ophiocoma nigra, with Sycandra ciliata (large), Chattop- 

 terus sp., Ophiopholis aculeata, Solaster pajiposus, Thyonefusus, Ascidiella 

 scabra, and Ciona intestinalis. 



7. North-west of Calf Island, further out, 20 fathoms, bottom stones, 

 shells, and echinoderm spines, with Sarcodictyon catenatum, Aglaophenia 

 tid)tdipora, Sjyatangus j)urpureus. Aphrodite aculeata, Pectuncidus glyci- 

 meris, Ciona intestinalis, and Peropthora Listeri. 



8. From off Kitterland to across Port Erin Bay, 2 miles off, 18 

 fathoms ; bottom large shells, with Perophora Listeri, Ascidia menttda. 



9. West of Port Erin Breakwater, a mile out, 17 fathoms ; gravel 

 and rotten algae, with Lyonsia norvegica (alive). 



II. On September 1 1 some of the Committee dredged from a large 

 rowing boat between Port Erin and the Calf Island ; half a dozen hauls 

 were taken about Aldrick and Bay Fine, half to a mile off shore ; deptli 

 15 to 18 fathoms. The hauls overlapped, so all maybe considered one 

 locality. Amongst the animals obtained were : Folliculina ampulla (in 

 quantity, alive), Astrorhiza limicola, Antennularia ramosa and other 

 hydroids, Sarcodictyon catenatum, Antedon rosacea, Amphiporus pidcher, 

 2'erebella nebidosa, Halsydna gelatinosa, Conilera cylindracea, Anthura 



' The few species picked out for mention in each haul are not to be regarded as 

 the rarest forms observed. In some cases they are the commonest. They are thf! 

 forms which at the time seemed to us the most conspicuous and characteristic of the 

 haul — the most noteworthy inhabitants of that ground. 



