ON THE MARINE ZOOLOGY OF THE IRISH SEA. 457 



insignisJ Miss L. R. Thornely reports the addition of Perigonimus 

 repens to the list of hydroids. The yellow variety of Sarcodictyon 

 [Clavularia) catenata,oi which we dredged several colonies on August 25, 

 off the north-west of the Calf Island, in 22 fatho ns, is an interesting 

 addition to our fauna. It has only been found before in Loch Fyne and 

 at two other spots on the west coast of Scotland. This is certainly the 

 Sarcodictyon agglomeratum of Forbes and Goodsir. 



Vermes. 



Mr. Beaumont reports the following additions to the list of 

 Nemertida : — Amphiporuspulcher, A. disdmuJans, Tetrastemma Jlavidum, 

 Prosorhochmus Claparedii, Micrura jnirpurea, M. fasciolata, M. Candida, 

 and Cerebratulus Jiiscus. 



During this summer we have dredged from a gravelly bottom, at 10 

 to 15 fathoms, in two localities near Port Erin, a species of Polygordius, 

 either P. apogon, M'Intosh, or a new species. 



Amongst Polycii.eta Mr. Sumner records Arenicola ecaudata and 

 Amphitrite Johnstoni ; Mi'. Arnold Watson Autolytus Alexandri (with egg- 

 sac) and many larval Pectinaria, in membranous tube .jV inch long. 



Amongst Polyzoa Miss Thornely reports the rare Triticella Boechii, 

 found attached to the prawn Calocaris Macandreoi, from the deep mud off 

 Port Erin. 



MOLLUSCA. 



The following Opisthobranchiata may be mentioned : — Scaphander 

 lignarius, Pleurohranclius pluniida, Oscanius memhranaceus, Elysia 

 viridis, Runcina Hancocki, Lamellidoris aspera, Polycera Lessonii, Cuthona 

 aurantiaca, Coryphella, gracilis, C. lineata and C. Landshurgii, Faceliiia 

 DriLmmondi, Eolis arenicola, Cratena concinrm and C. olivacea, Galvina 

 Farrani, Emhletonia pidchra, Acfceonia corriigata, Limapontia nigra, 

 Lomanotus genei, and a curious little Doris, which has been dredged 

 several times in the neighbourhood of Port Erin, and is still unidentified. 

 It may possibly be an unknown species. 



Crustacea. 



This section is contributed by Mr. I. C. Thompson and Mr. A. O. 

 Walker, Mr. Thompson taking the Copepoda and Mr. Walker the higher 

 forms. The following additional records of Copepoda have, however, been 

 supplied by Mr. Andrew Scott since Mr. Thompson's report was drawn up, 

 viz. : — Sunaristes paguri, Hesse ; Stenhelia reflexa, T. Scott ; Laophonte 

 intermedia, T. S. ; L. propinqua, T. and A. S.; Cletodes sirnilis, T. S.; 

 Modiolicola insignis, Aur. ; and Dermatomyzon gibberum, T. and A. S. : all 

 new to our fauna. 



Copepoda. 



In the last report mention was made of a new copepod found by Mr. 

 I. C. Thompson in dredged material taken outside Port Erin at 1 5 fathoms. 

 This has since been described by Mr.. Thompson ('Trans. Liverpool Biol. 

 Soc.,'vol. ix. p. 96, plates vi. and vii.) as P sexidccyclopia stephoides. 



It was by no means easy to decide into which genus to place this 



* For Mr. Browne's observations on these and other species see toI. iv. of FauTia 

 of Liverpool Bay. 



