MARINE BIOLOGICAL STATION ON PUFFIN ISLAND. 27 



but new to this locality. On this occasion also the cysto- 

 carps of Catenella opuntia, which have been seldom seen 

 before, were found in abundance. 



Zoophytes, Annelids, &c. 



Before the "Hyaena" dredging expedition in May, a 

 party of eight members of the Committee and others, in- 

 cluding Mr. George Brook, F.L.S., Lecturer on Embry- 

 ology in the University of Edinburgh, worked at the 

 station ; and a week later Mr. J. Hornell, who had been 

 on the ''Hyaena" trip, left the rest of the party at 

 Bangor and then devoted some time to the investigation 

 of the Annelids first of the mud flats about Garth, where 

 he found several species new to the district, and secondly 

 at Puffin Island. Amongst the most notable forms col- 

 lected on this occasion by Mr. Hornell were Dasychone 

 lucullana, Serpula reversa, Sigalion boa, Trophonia plumosa, 

 Pliyllodoce laminosa, Flabelligera affinis, Scoloplos armiger 

 and a specimen of the curious and aberrant Splicer 'odorum 

 flavum. The most abundant Polychaeta on the shore at 

 Puffin are Eulalia viridis, Nereis pelagica, Polynoe lagisca, 

 and a Cirratulus. The Gephyrean worm Phnscolosoma 

 vulgare also occurs in mud under stones on the south Spit 

 (October 26th, 1890). 



Mr. Chadwick collected at Beaumaris and at Puffin 

 Island towards the end of June, and had a couple of days 

 dredging from the Turbot Hole upwards to the straits ; 

 and Mr. J. A. Clubb and others did some work at the 

 station in August. Mr. Chadwick dredged a fine Chalina 

 oculata, eight inches in height, four examples of Pilumnus 

 hirtellus each ensconced within a separate whelk shell, 

 many Clavelina lepadiformis, which is very abundant near 

 Beaumaris, and some Cucumaria planci which have since 

 reproduced by transverse fission in captivity, three of them 



