FROM THE EDDrSTONE GROUNDS TO START POINT. 



515 



Such indications as the reports afford, as to which were the abundant 

 and characteristic species, are also mentioned, but in this respect the 

 information is very imperfect. There are few indications as to the 

 attachments of fixed species, and it is not made clear in most cases 

 which species were definitely associated with each other. This was 

 almost inevitable in the case of an expedition covering a very large 

 area, and when the animals belonging to different groups were divided 

 amongst a number of specialists not in immediate communication with 

 each other. In the case of the Eddystone to Start Grounds, described 

 in the present report, where the area dealt with is limited, and where 

 the species have nearly all been identified in the same laboratory, it has 

 been much more easy for one individual to obtain some knowledge of 

 the whole fauna and co-ordinate the different groups. I must, however, 

 emphasise the fact that lists of the species found upon a ground are 

 of very little service in giving an idea of the character of its fauna 

 unless information is added as to the relative abundance of each animal, 

 and so far as possible as to its relations with other organisms and with 

 the bottom-deposit. 



Comparison tvith North Sea and Irish Sea Faunas. Lists of the 

 fauna at five stations dredged by the Pommcrania. expedition in the 

 North Sea, compiled from the reports of the expedition : — 



Station 111. 



Pomme)unia Expedition, August 20th, 1872. 



9 a.m. 1| miles E.S.E. of Lowestoft. 



Depth, 16 fathoms; Bottom-deposit, Small stones. 



[m = many ; p = present in moderate numbers ; F = few. ] 



ACTINOZOA. 



Alcyouium digitatum 



Hydrozoa. 

 Bimeria vestita 

 Hydractinia echiuata 

 Tubularia indivisa (m) 

 Clytia Jolmstoni 

 Camjianularia flexuosa 

 Calycella syringa 

 Filelluni serpens 

 Halecium halecinum (m) 

 Sertularella polyzouias 

 Dipliasia atteniiata 

 Sertularia aldetina (m) 

 „ argentea (m) 

 Hydrallmania falcata (m) 

 Antennularia antennina (m) 



,, raniosa 



Plumularia setacea 



POLYCHAETA. 



Thelepus cincinatus (m) 

 SabcUaria alveolata (m) 

 Sabella penicillus (f) 



(=5'. iMVonitw,) 

 Polynoe squamata (f) 

 Nereis pclagica (r) 

 Nephthys caeca (m) 



Ckustacea. 



Dryope crenatipalniata 

 Aniathilla Sabinei 

 Mysis inermis 

 Gastrosaccus sanctns 

 Pandalus annulicornis 

 Virbius fasciger 

 Porcellana longicornis 

 Stenorhynclius rostratus 

 ( = S, pJuilaiujiiun) 



MOLLUSCA. 



Pecten varius {vai: alba) 

 Modiola modiolus 

 Natica Aldcri ( = N. nitida) 

 Murex erinaceus 

 Pleurotoma rufa 



Doto fragilis 

 Doris tubercnlata 



, , pilosa 

 Tliecacera pennigera 



POLYZOA. 



Bugula plumosa 

 Flustra foliacea 

 Alcyonidiuni gelatinosum 

 Lepralia annulata 



TUNICATA. 



Phallusia virginea 



( = Ascidiclla virginea) 



