POLYCH^ETA. 309 



Dasychone are striated parallel to the curvatures and are somewhat characteristic for 

 the species. There are long-shafted and short-shafted forms and others, as in 

 D. baircli, McInt. (" Challenger") and D. picta, McLntt., of special form. Examples 

 of long-shafted uncini are those of D. wyvillei, McInt., and D. orientalis, McInt. ; 

 short-shafted uncini are in D. cingulata, Grube, D. japonica, McInt., D. nigro- 

 maculata, McInt.. and D. maculata, Fischli (" Polychiiten von Ternate," ' Abh. 

 Senckenb. Ges.,' Band xxv., Frankfort, 1900, p. 125). 



The radioles of the Ceylon specimen of Dasychone cingulata agree in arrangement 

 and form of stylodes and eyes with the figures of D. japonica, McInt., and 

 D. maculata, Fischli. The colour has vanished except for the minute dark pigment 

 spots between the fascicles and the tori of the abdominal segments. The denticulations 

 on the vertex of the uncinus occur in transverse rows (about three in a row) as in 

 many of the Terebellacea ; two appear above the main hook in side view ( Plate VII. . 

 fig. 171). 



Eurato porifera (Grube) Plate VII., fig. 173. 



Sabella porifera, Grube, 'Ann. Semp.,' 1878, p. 252. 



Eurato, St. Joseph, 'Ann. Dinard,' part iii. ; ' Ann. Sci. Nat.' (7 ser.), xvii., 1894, p. 219. 



" Large Sabellid from centre of coral block, Muttuvaratu Paar ; yellow-olive body, 

 scarlet and yellow plumes." Total length about 90 millims., of which the gills occupy 

 30 millims. and the thorax 10 millims. ; eight thoracic segments ; width 8 millims. 



The colour of the preserved specimen is sandy-yellow without any trace of pigment 

 spots or markings. The only relief from the yellow ground colour is afforded by the 

 characteristic spongy glandular tract which occurs on the anterior dorsal thoracic 

 region. This has a brown colour and appears divided into right and left portions by 

 the dorsal thoracic groove. 



Limbate capillary setae of different lengths throughout ; uncini uniserial, avicular 

 with multidenticulate (cross-hatched) vertex, not different from those figured by 

 von Marenzeller for Laonome japonica. 



Branchial stems in a single row, a few of them only occurring at a slightly deeper 

 level than the rest, about 51 on each side. The length of the laciniae tentaculares is 

 about 7 millims. 



The dorsal glandular tract by examination under a lens appears to consist of 

 anterior and posterior portions, the former of a looser texture and thicker ; but in 

 the specimen under description both regions have the same brownish tint. Another 

 smaller individual which accompanied the one described above shows the glandular 

 area much more clearly. There is a posterior pale porous tract with a labyrinthine 

 structure, the sulci running, in general, transversely ; in front of this there are two 

 dark-coloured convex porous cushions. In this specimen the general colour is duller 

 and the gills rather olivaceous. In both cases the ventral fsecal groove bends up 



