47 80 Proceedings of the Royal Irish A cademy. 



in the Irish Sea, and N. Schmardaei Quat., a southern species found in 

 Gal way Bay. 



Nereis pelagica L. 



1910. Nereis pelagica. Mcintosh, p. 267. 



This species is very abundant throughout the area, ranging from tide- 

 marks down to 25 fathoms. Heteronereis stages were found in February and 

 March. An unmodified female, with the body-cavity full of eggs, was found 

 in Blacksod Bay in March. Young specimens were found in September. 

 A number of Heteronereids of this species was obtained from the stomach of 

 the Spur Dogfish (Acanthias vulgaris) taken off High Island, in February, 

 1902. 



JV. pelagica is commonly found under stones, in weeds and Laminaria 

 roots, and in the sand of Zostera beds. 



Habitat. — Blacksod Bay — Taken on the shore on 24 occasions. Dredged 

 in 1 fm. Clew Bay — Common on east and south shores of 

 Clare Island, under stones, in Lithothamnion, etc. Dredged 

 on 11 occasions in the bay, in 5-20 fins. Dredged between 

 Dorinish and Inishimmel. Dredged in 44 fms., 3 miles 

 south-west of High Island. Dredged in 42 fms., 1^ mile 

 north of High Island. Ballynakill Harbour— Dredged in 

 6-9 fms. 

 Distribution. — Shores of Atlantic, Mediterranean, Arctic, and Pacific 

 oceans. 



Nereis cultrifera Grube. 



1910. Nereis cultrifera. Mcintosh, p. 280. 



This species is commonly found between tide-marks in all parts of the 

 area. It is very seldom taken in the dredge, and I have never found it 

 below 3 fms. 



No Heteronereis stages of this species were found, and it is apparently 

 very rare. The only one Mcintosh mentions in his Monograph (1910, p. 288) 

 was an Irish specimen. An unmodified female, full of eggs, was found in 

 Blacksod Bay in March. 



This species is usually found in the sand under stones, and especially in 

 the sand of Zostera beds. 



Habitat.— Blacksod Bay — Taken on the shore on twenty-one occasions. 

 Dredged in h-'6h fms. Clew Bay — East shore of Clare 

 Island. Ballynakill Harbour — Dredged in 1 4 fms., on 

 4 occasions. Found on the shore on 3 occasions. Bofin 

 Harbour — Found on the shore. 



