Clare Island Survey — ArchiqntieUda and Poly chaeta. 47 85 



Lumbriconereis Latreillii Ami. and Edw. 



1910. Lumbriconereis Latreillii. Mcintosh, p. 376. 



This species is fairly common on the shore in Blacksod Bay, living under 

 stones. A specimen 300 mm. long was found living in sand. 



Habitat: — Blacksod Bay. — Found on the shore on 7 occasions. Clew 

 Bay— Dredged on 8 occasions, in 4|— 19 fms. 



LHstribution.— British Isles; south of England; Channel Islands ; France; 

 North Sea ; Mediterranean ; Japan. 



Lumbriconereis impatiens Claparede. 



1910. Lumbriconereis impatiens. Mcintosh, p. 379. 



This species is characteristic of a bottom of clean sand, and is very 

 common on the trawling ground in Clew Bay. 



According to Mcintosh, this species is characterized by the presence of 

 long hooks in the first foot, whilst in L. fragilis (Miiller) the hooks appear 

 in the 21st foot. In the Irish specimens the first hook appears usually in 

 the 4th or 5th segment, as in specimens from Plymouth. L. fragilis has a 

 northern distribution, whilst L. impatiens is a southern form ranging to the 

 Mediterranean. I am inclined to think that further research will show that 

 these two forms are identical, the Irish specimens being intermediate both 

 in structure and geographical position. Mcintosh states that the spines in 

 both species are black, whilst de Saint-Joseph (1898, p. 281) found those of 

 Jj. impatiens to be yellow. The figures of the dental apparatus of L. impatiens 

 given by Mcintosh and de Saint-Joseph do not seem to agree at all, the 

 figure of the latter author agreeing better with Mcintosh's figures for 

 L. fragilis. 



Habitat. — Clew Bay — Dredged on 9 occasions, in 5-42 fms. 



Distribution. — British Isles ; France ; Naples. 



Lumbriconereis gracilis Ehlers. 



1910. Lumbriconereis gracilis. Mcintosh, p. 385. 



This species is found on a bottom of clean sand, gravel, and rock, or on 

 muddy sand. Mature specimens were found in August. 



Habitat. — Clew Bay — Found on 13 occasions in various parts of the 



bay, in 5-27 fms. Ballynakill Harbour — Dredged on 3 



occasions, in 1-9 fms. 

 Distribution. — British Isles; off Cape Finisterre ; Norway; Madeira; 



Mediterranean ; Adriatic. 



