from the North Sea and adjacent j^tarts. 255 



The frngineiits arc very much lacerated, but tlie feet, 

 which are cloao together, are not diiina|;ocl, and a;;ree with 

 those on the type-slides. One of the fragments contains feet 

 which must come before the tiltieth foot, because tho ventral 

 tlivision shows no long winged hooks, which only ap[>ear about 

 llie fiftieth. However, there is some uncoitainty where the 

 hooks eummence, for according to I)e St. Joseph they ajjpear 

 between the tliirtieth and the lifty-second, while another 

 investigator, Mesnil, records tluir appearance from the thirty- 

 titth to the thirty-seventh. The hooks are very powerful, 

 liaving strong stout shafts which are curved and prominently 

 striated, the hooks themselves facing upwards. The wings 

 are large and extend to the surface of tlie lamella. Aceom- 

 jKinying the hooks are slender, finely pointed, smooth bristles 

 whose tips reach upwards beyond the hooks, while ventrally 

 beyond tlie last hook there isaclur-ter of six or seven — three, 

 according to Prof. M'lntosh, — which are minutely striated. 

 In all the slender bristles the tips are curved and face down- 

 wards. The dorsal bristles are long, slender, and linely 

 pointed, the length extending beyond the lamella being only 

 about one-fourth the total length. The bristles arise close 

 together and spread out fan-wise as they extend outwards. 

 The bases are sheathed iu muscles, which move them. The 

 branchiie which are present on all the feet of the fragments 

 are large, bluntly conical, and present edges liaving a frilled 

 appearance. Prof. M'lntosh remarks that in life the lamelue 

 ot the feet as well as the branchiie, which meet those of the 

 opposite side in the front, are muscular and perform various 

 movements. 



The body-wall of this species is very thick and muscular, 

 and thus presents a condition totally ditferent from that of 

 many of the Eunicida?, which have body-walls so thin that 

 the fieces in the gut appear as green masses. I was unable 

 to obtain any nephridia, but one fragment contained ova 

 which were fairly large in size and opac^ue in colour. The 

 gut, which was exposed in parts, is fairly wide and is covered 

 by a white-coloured tissue which has been probably discoloured 

 by the preserving fluid. The contents ot the gut were sand, 

 debris, and brown masses which appeared like pieces of tissue. 

 It is doubtful whether the animals are carnivorous or not. 



The fragments were taken along with several Polynoidie 

 which were worked out by Mr. \V. Small. 



Biblioijrajphi/. 



l/.LKA. \\i\2. 'The KiTHUtiiUe Polycluetn of Japan." 

 Malmorkx. 1S«>.j. 'Nordibka IIiifri-Annulattr. Jitockholm. 



