Clare Island Survey — Archiannelida and Poly chaeta. 47 121 



are of three types ; one type occurring in the anterior eight bundles, a second 

 type in the posterior eight bundles, and the third type in all the bundles ; 

 (3) uncini, which have a characteristic shape and arrangement. 



I hope to publish a more complete description of this species on some 

 future occasion ; but meanwhile a single point may be mentioned. The first 

 bundle of capillary setae is on the fourth segment. Langerhans says the 

 third segment ; but it may be inferred from his figure of Leaena oculata that 

 he does not include the buccal segment. 



In 1899 Ssolowiew described a new genus and species from the White 

 Sea, which he named Soloivetia Malmgreni. Apparently he was unaware 

 of the writings of Langerhans and de Saint- Joseph on the ebranchiate 

 Terebellidae, as their names are not mentioned in the paper. 



<S. Malm.greni agrees with P. Graffi in the following characters : — 

 (1) Branchiae are absent. (2) There are 16 pairs of bundles of capillary 

 setae consisting of smooth and serrate setae, beginning on the 4th segment. 

 (3) Uncini begin in the 3rd setigerous segment, and have the characteristic 

 shape and arrangement in single and double rows. 



Ssolowiew does not appear to have noticed the peculiar arrangement of 

 the smooth and serrate capillary setae, but otherwise no distinction can be 

 found between the two forms, and I have no doubt but that they are referable 

 to the same species. 



Habitat— Clew Bay— Dredged in 11-19 fms., 1 mile E.S.E. of Clare 

 Island lighthouse, on a sandy bottom. 



Distribution. — White Sea (7|-9£ fms.) ; Franz-Joseph Land ; Madeira. 



Amphitrite affinis Malmgren. 



1865. Amphitrite affinis. Malmgren, p. 375. 1912. A. a. Wollebaek, 



p. 101. 



A single small specimen, dredged in 16-19 fms. in Clew Bay, appears to 

 belong to this species. It agrees with it in having 3 pairs of branched gills, 

 capillary setae on 17 segments, in the shape and arrangement of the uncinate 

 setae, and in having a tube formed of mud, with thick walls. The wings and 

 teeth on the capillary setae are rather more prominent than is shown in the 

 figures of Malmgren and Wollebaek. The uncini agree closely, the rounded 

 base being very characteristic. On segments 11-20 the uncini are in two 

 rows, on the other segments in a single row. 



This species seems to be very closely related to the Amphitrite variabilis 

 (Bisso) found in the Mediterranean, differing, so far as I can see, only in the 

 simpler gills and the shape of the uncini. 



B.I.A. PROC, VOL. XXXI. Q 47 



