47 50 Proceedings of the Royal Irish Academy. 



I have never yet found specimens having setae with bifid terminal pieces, 

 and at the same time the coarse serrations characteristic of Castalia fusca. 

 Habitat. — Balltnakill Harbour — Dredged in 1-3 fms. 

 Distribution. — Dinard ; Monaco. 



Family AMPHINOMIDAE. 

 Euphrosyne foliosa Aud. and Edw. 

 1900. Euphrosyne foliosa. Mcintosh, p. 234. 

 This species is rare in the district. 

 Habitat. — Clew Bay — Dredged on 2 occasions, in 5-16 fms. Balltnakill 



Harbour — Dredged on 3 occasions in 2-8 fms. 

 Distribution. — British Isles ; France ; Mediterranean. 



Family APHEODITIDAE. 

 Aphrodite aculeata L. 

 1900. Aphrodite aculeata. Mcintosh, p. 247. 



This species is usually dredged on sand which contains a slight admixture 

 of mud. It is almost absent from Clew Bay, where the sand is usually hard 

 and clean. In the deeper waters of Blacksod Bay it is sufficiently abundant 

 to give a characteristic aspect to the fauna. The bottom here consists of 

 muddy sand and shells. 



Habitat.— Blacksod Bay— Dredged on 8 occasions in 4-9 fms. Clew 

 Bay — Off Inishgowla, in 7-10 fms. East of Clare Island, in 

 18 fms. Ballynakill Harbour — Found once on the shore. 

 Dredged on 3 occasions in 6-12 fms. 

 Distribution. — North Atlantic shores ; Mediterranean ; Red Sea. 



Lepidonotus squamatus (L.). 



1900. Lepidonotus squamatus. Mcintosh, p. 274. 



This species is very common on the shore, under stones and in Laminaria 

 roots. It is very commonly dredged down to 30 fms., throughout the area. 



Habitat. — Blacksod Bay — Taken on the shore on 21 occasions. Dredged 

 on 6 occasions in 3-8 fms. Clew Bay — East shore of Clare 

 Island. Taken in the dredge on 14 occasions in different 

 parts of the bay, in 4-28 fms. Ballynakill Harbour — 

 Found 3 times on the shore. Dredged 3 times in 1-8 fms. 



Distribution. — Shores of North Atlantic ; Arctic ; Japan. 



Lepidonotus clava (Montagu). 

 1900. Lepidonotus clava. Mcintosh, p. 280. 



