1 2 



.;i and "kol liy Savi well as by Grube, are plainly visible. The 



il i il m of this sp rding ti> Savigny's description, is provided with seven 



. the filaments of which have foliaceous dilatations at the tip; however in 



ription of the rimor-specimen il was alreadj stated, that at the external end of the 



th gil! can be seen, often so small, that it easily may be overlooked. 



The dorsal fascicle «'t' set.! irding to Savigny, is rather narrow and does only 



id till the third median gill; however in most of the Siboga-specimens it is somewhat 



Ier and reachi fourth branchia. It contains two kinds of bristles, for besides the 



ordinary bifid ones, there are other setae, nearly half as long, that show only a tracé of the 



nd limb. Als. i the ringent setae are not wanting in E. laureata and wen- already tigured 



in my paper on the Timor-specimen ; however this worm being in an indifferent state of pn 



vation I was not able to determine their exact situation. In the Siboga-specimens I find them 



alwaj ely crowded together in a group ofabout ten, in the region of the median branchia: 



PI. VI, fig. 10 are of the type of /:'. fo/iosa, with the plain tip of their long limb rather short 



and blunt, faintly curved backward ; their short limb is moderately dilated. In one specimen 



dender stalk of these bristles showed small, oval, clear spots, perhaps pits; they were also 



wed in the ventral setae, but it is not a common appearance. The ventral fascicle besides 



the ordinary bifid bristles, also contains some shorter ones, that are not forked and that only 



show a tracé of the second limb. 



Euphrosyne pelagica Horst. PI. III, figs. 5, 6a, 6ó, ja, jb, fc\ PI. VI, fig. 5 



Horst, loc. cit. p. 217. 



Stat. 40. Paternoster-islands. 4 specimens. 



8 Lat. X., 121 19' Long. E. Sulu Sea. Depth 275 M.; coralbottom. 1 young 

 specimen. 



A small pelagic Annelid, measuring at the most 8 mm. in length and 2 1 /, mm. in breadth, 

 pp>vided on each segment with seven pairs of short, stout branchial arbuscles, which are 

 dichotomously divided and carry on the tip a tuft of 3 to 6 digitate processes. Lateral dorsal 

 cirrus situated between the second and third branchiae, nearly as long as these. In front ot 

 the branchiae a doublé row of forked bristles; among them some ringent chaetae of the type 

 of /;". borealis. Ventral bristles partly slender and elongated, as long as half the breadth of 

 the body. Caruncle with an elevated median keel, extending over four segments. 



Among the numerous Euphrosyne -specimens collected near the Paternoster-islands, I 

 met with some individuals of a small species, already recognizable to the naked eye by their 

 trans 1 eries of dark brownish gills. The largest specimen measures about 8 mm. in length, 



breadth being 2% mm., without the bristles, projecting beyond the body as far as half its 

 diameter. I ■ breadth of the bare dorso-median field is about one fourth of that of the body. 

 The number of segments amounts to 30. 



The caruncle extends over four segments; it has an elevated median keel, stretching 

 what beyond the lateral lobes. There are large, oval eyes, at the dorsal as well as at the 



12 



