350 DB. BAIED ON SEVERAL GENEEA OF EUNICEA. 



The spines or aciculse are two, long, straight, or only slightly- 

 curved at the apex, one being shorter than the other. There is 

 only one uncinus or hooklet, which is shorter than the spines, 

 curved, club-shaped at apex, and indistinctly forcipate. 

 Hah. Australia, Dr. Bowerhanh. 



Sp. 15. Eunice guttata, Baird. 



Body broad, flat, except near the anterior extremity, which is 

 somewhat cylindrical, very gradually tapering towards the tail, 

 and consisting of about 120 very narrow segments. Length 

 nearly two inches, breadth about the centre of the body 2| lines. 

 Along the lower portion of the body the back is marked witli 

 several large dark spots. Tentacle, antenna?, and palpi not arti- 

 culated, and moderately long. Tentacular cirri very short. Head 

 indistinctly four-lobed. Buccal segment about equal to the 

 breadth of the four succeeding segments. Ventral margin of 

 buccal segment swollen and crenate. The branchia? commence at 

 the sixth segment, and are small and dark-coloured ; pectinations 

 about the centre of the body, ten in number. Dorsal cirri rather 

 large. 



Feet small. Simple setae lanceolate and finely pointed. Pec- 

 tinate seta? finely toothed, the external tooth longer than the 

 others. Compound setaj stout, and broad at the summit of the 

 shaft ; falciform appendage rather stout, curved at the apex, and 

 with only one tooth, which is a little below the apex. Spines 

 or aciculjG three in number — two long and stout, dark-coloured, 

 and blunt at the point, the third much smaller but of exactly 

 the same form. Uncini or booklets two, lighter-coloured than 

 the spines, curved, and sharply forcipate, 



Hab. Taken between Bombay and Singapore. 



Sp. 16. Eunice nakconi, Baird. 



Body slender, nearly 2 inches long, and consisting of about 120 

 segments. Head with two prominent lobes. Buccal segment 

 about equal to the three succeeding, the articulation from which 

 the tentacular cirri spring being of itself equal in size to the first 

 segment of body. Ventral margin of buccal segment not crenated. 

 Tentacle, antenna), and palpi inconspicuously articulated. Ten- 

 tacle longer than the antennae and palpi, which are all of about 

 equal length . Tentacular cirri longer than the transverse diameter 

 of the buccal segment. Dorsal cirri of moderate length, conical. 

 Ventral cirri short. Branchiae very small, commencing on the 

 twelfth segment. 



