100 STYLARIOIDES FLABELLATA. 



4 Stylarioides flabellata, Sars, 1868. Plate XCVI, fig. 4; Plate CIV, figs. 3— 3e — 



bristles and hooks ; Plate XCIV, fig. 1— tail. 



Specific Characters.— Body about an inch in length, densely coated with sand-grains, 

 Foraminifera and minute shell-fragments, and often of a ferruginous or blackish hue 

 posteriorly, rounded, enlarged in the anterior third, and gently tapering to the posterior 

 end which forms a short cone with the anus in the centre. Anterior end very little 

 tapered, for it consists of a somewhat trifid region, with a prominent, conical oral process 

 in the centre, and on each side the forwardly projecting first foot, with the long, fkiely 

 iridescent bristles which in good examples are about a third the length of the body. 

 Segmentation just observable anteriorly, but distinct posteriorly. Segments about thirty. 

 The frontal cone has long papillae with globular or clavate tips, and they give a characteristic 

 fringe to the region. Two grooved and crenate palpi and a series of slender translucent 

 branchiae issue from the oral cone. Short segments characterise the base of the long first 

 and second bristles, but the free portion in each has for the most part long joints. The 

 tips are curved inward. Dorsal bristles of the third foot leave the body at a different 

 angle, are much shorter, and the ventral take the form of long, flattened, jointed shafts 

 which slightly increase distally where they are dilated and bent forward, whilst the tip 

 consists of a flattened diminishing process with a well-marked hook. These hooks charac- 

 terise a considerable region anteriorly, and gradually pass into simple hooks posteriorly. 

 The dorsal bristles continue short and of the same structure throughout. 



. Synonyms. 



1868. Trophonia flabellata, Sars. Christ. Vidensk.-Selsk. Forhandl., p. 10 (sep. copy). 



1873. „ „ idem. Bidrag Christ. Fauna, p. 49, tab. xvii, figs. 1 — 12. 



1877. S tylarioides flabellata, Grube. Abh. Schles. Gresellsch., Natur. Sect. (1876), p. 47. 



1879. Trophonia flabellata, Tauber. Annul. Danica, p. 112. 



1883. „ „ Levinsen. Vidensk. Meddel. Foren. Kjobenh., p. 122. 



1894. „ „ Bidenkap. Christ. Vidensk.-Selsk. Forhandl., p. 105. 



1897. S tylarioides flabellaUis, Michaelsen. Polych. deutsch. Meere, p. 156. 



1908. „ ' flabellata, Mcintosh. Ann. Nat. Hist., ser. 8, vol. ii, pp. 535, 541. 



Habitat.-— Dredged in the ' Porcupine ' Expedition of 1870 at Station No. VI (Channel 

 Slope) 48° 26' N., 9° 44' W., in 358 fathoms ; surface temperature 62°, bottom temperature 

 50-3° F. 



A form frequenting deep water. 



Abroad it has been found at 300 fathoms off Norway (M. Sars), Bergen and other 

 parts of Norway, Hardanger Fjord, Drobak, Christiania (Canon Norman). 



A species about the size of 8. glauca, but very readily distinguished therefrom by its 

 dense coating of sand-grains, by the ferruginous hue of the posterior region, by the 

 stronger frontal bristles, and by the conical anterior process with its long papillse. The 

 body is rounded, about an inch in length in the preparations and having about thirty 

 bristled segments, slightly enlarged in the anterior third and gently tapering therefrom 



