Clare Island Survey — Archiannelida and Polychaeta. 47 51 



This species is common on the shore, especially in Lithothamnion and 

 Laminaria roots. It is seldom taken in the dredge. 



Habitat. — Blacksod Bay— Taken on the shore on 19 occasions. Clew 



Bay— East and south shores of Clare Island. Dredged in 



9-11 fms., east of Clare Island. Ballynakill Harbour — 



Dredged in 1-3 fms. 



Distribution. — Ireland ; west of Scotland ; south coast of England ; France ; 



Spain ; Madeira ; Canaries ; Mediterranean ; Japan ; South Africa. 



Gattyana cirrosa (Pallas). 

 1900. Gattyana cirrosa. Mcintosh, p. 285. 



This species is almost always found sharing the tube of Chaetopterus. It 

 is never very common. 



Habitat. — Blacksod Bay— Found twice on the shore, and dredged in 



4f fms. Clew Bay — Dredged on 5 occasions in 4-20 fms. 

 Distribution. — Shores of North Atlantic ; Arctic. 



Lagisca floccosa (Savigny). 

 1900. Lagisca floccosa. Mcintosh, p. 298. 



Extremely common on the shore, under stones, and in Laminaria roots. 

 Habitat. — Blacksod Bay — Taken on the shore on 20 occasions. Not taken 

 in the dredge. Clew Bay — East and south shores of Clare 

 Island. Dredged on 5 occasions in 4-28 fms. Ballynakill 

 Harbour — Dredged on 2 occasions in 6-8 fms. Cleggan 

 Bay — Dredged in 5-10 fms. 

 Distribution.— Shores of North Atlantic ; Greenland ; Madeira. 



Lagisca Elizabethae Mcintosh. 

 1900. Lagisca Elizabethae. Mcintosh, p. 303. 1891. Polynoe {Lagisca) 

 extenuate/.. Hornell, p. 233. 1910. Lagisca extenuata. Elwes, p. 59. 



This species is very common on the shore and in shallow water, 

 especially in Laminaria roots. It is easily recognizable from its colouration 

 and the structure of the scales. There seems not much doubt that the Polynoe 

 extenuata of Hornell belongs to this species. It agrees with it in the structure 

 of the setae and of the scales. Lagisca extenuata (Grube) seems to be a deep- 

 water form in the British area. The Lagisca extenuata of Major Elwes is 

 certainly this form, as I had the opportunity of examining specimens. 



Habitat. — Blacksod Bay — Found on the shore on 10 occasions. Dredged 

 on 4 occasions in 1-6 fms. Clew Bay — Shores of Clare 

 Island, in Lithothamnion. Dredged on 8 occasions, in 



2-29 fms. 



G2 



