Clare Island Survey — Archiannelida and Polychaeta. 47 57 



Habitat. — Cleav Bay — Dredged on eleven occasions in various parts of 



the bay, in 4-26 fms. 

 Distribution. — British Isles ; Norway ; east North America ; France ; 

 Mediterranean. 



Sigalion Mathildae Aud. and Edw. 



1900. Sigalion Mathildae. Mcintosh, p. 427. 



This species is frequent but not abundant in clean sand in Blaeksod Bay. 



Habitat. — Blacksod Bay — Found on the shore on 11 occasions. Clew 



Bay — Dredged on three occasions in 5-20 fms. 

 Distribution. — British Isles ; North Sea ; France ; Mediterranean. 



Pholoe minuta (Fabrieius). 



1900. Pholoe minuta. Mcintosh, p. 437. 



Very abundant under stones on the shore, in Lithothamnion, and in 

 Laminaria roots. 



Habitat. — Blacksod Bay — Found on the shore on 17 occasions. Dredged 

 on 6 occasions in 1-8 fms. Clew Bay— East and south 

 shores of Clare Island. Taken on 7 occasions in 2-26 

 fathoms. Ballynakill Harbour — Dredged on 7 occasions 

 in 1-8 fms. 



Distribution.— North Atlantic shores; Arctic. 



Pholoe tuberculata sp. n. 

 PL VI, figs. 14 A-L. 



A number of specimens of Pholoe from several localities differ in many 

 characters from the common P. minuta, and appear to belong to an 

 undescribed species. 



The largest specimen is 21 mm. long, composed of 68 setigerous segments. 

 The body throughout is of very uniform width, tapering rapidly at each end. 

 The Blacksod specimens are greyish-brown in colour, whilst one from 

 Portstewart is flesh-coloured. 



The head (PL VI, figs. 14 A, b) is rounded at the back and sides, deeply 

 indented in front. There are two pairs of large black eyes, the pair on each 

 side being connate. The median tentacle is placed in the anterior indenta- 

 tion of the head. It is short, smooth, and conical, seated on a broad rounded 

 base which bears several small papillae. The palps are massive, smooth, 

 tapering to a point, and contain a great deal of opaque white pigment, 

 especially towards the distal end. The tentacular cirri are well in front of 



E.I. A. PKOC, VOL. XXXI. H 47 



