* ANNELIDA FROM BERMUDA. 319 
The general color of the body (in alcohol) is yellowish-white; beauti- 
fully irridescent. 
Body strongly convex above; flattened below. 
Length (about), 110™™. 
Greatest width, 4™. 
There is a gradual diminution of diameter along the posterior third. 
EUNICE VIOLACEA Grube. 
Eunice violacea, Grube. Annulata Orstediana p.57. 1856. 
Eunice violacea Quatrefages. Hist. Nat. des Annel., vol.i, p. 326. 1865. 
Eunice Rousswi Ehlers. Die Borstenwiirmer, p. 309. 1868. 
Ehlers’ identification of H. violacea Grube with H. Rousset Quatr. 
seems at best very doubtful. Inthe former, the branchize appear on the 
sixth segment; in the latter, on the tenth, and both descriptions seem 
to have been made from adult forms. Our material is hardly sufficient 
to decide the question positively. 
MARPHYSA Quatrefages. 
MARPHYSA ACICULARUM 2. sp. 
(Plate X, Figs. 50-53.) 
Head broad, distinctly bi-lobed ; lobes very broadly rounded in front; 
antenne smooth, tapering but little; median and median pair about 
three times as long as the head; lateral pair a little shorter than the 
last ; eyes two, black, between the bases of the paired antenne. 
Buccal segment double the length of the following segment; second 
segment a trifle shorter than the third. 
Dorsal cirri (Figs. 50-52) stout, conical, retaining about the same length 
throughout ; ventral cirri on the anterior half of the body borne on a 
stout cylindrical process, which becomes smaller on the posterior part 
of the body. 
The branchie begin (on adult specimens) on the twenty-fifth to twenty- 
ninth setigerous segment, at first as a single filament, shorter than the 
dorsal cirrus. The filaments soon increase in number to four (Fig. 52), 
but on the posterior segments become again reduced to one very minute 
filament. 
The superior (capillary) sete are about double the length of the in- 
ferior, and of the ordinary form. The form of the inferior setie is shown 
in Fig. 53. 
There are from three to five sharp, black acicule in each foot, scarcely 
projecting. 
