316 ANNELIDA FROM BERMUDA. 
teeth prolonged. The setx of the lower bundle are compound, longer 
on the posterior segments than in front; apex (Fig. 38) bi-dentate. 
In the anterior rami there is but one acicula, simple, pointed, project- 
ing a little beyond the foot; afterwards a second acicula is added (Fig. 
39), curved within the ramus, ventral, apex bluntly bi-dentate, project- 
ing. 
The body is strongly convex above, flattened below. 
The width at the fifteenth segment, 5™™; tapering very gradually in 
both directions, giving on the posterior segments a width of 1.5™™, 
The color, in alcohol, is light reddish-brown, with indications of a 
white band on the posterior half of the fourth setigerous segment. On 
the posterior segments the color is dark reddish-brown. 
There are numerous gray specks on the entire surface. 
EUNICE DENTICULATA 1%. Sp. 
(Plate X, Figs. 41, 41 a, b-45.) 
Head distinctly bi-lobed ; lobes flattened, broad; antennz short, deli- 
cate, about one-third longer than the head, smooth, conical, equal. 
Buccal segment about the length of the next three. Second segment 
not plainly separated from the buccal, when seen from above. 
Tentacular cirri delicate, conical, about one-half the length of the 
buccal segment. 
Dorsal cirri long and stout on the non-branchiated segments (Figs. 41, 
41a), very delicate on the segments with branchie (Figs. 41), 42), and 
arising from the side of the branchial stem. 
The ventral cirri are quite long on the anterior segments (Figs. 41, 
41a); after the first few segments they have a swollen base (Fig. 41), 
but this is lost further back (Fig. 42). 
The branchiz appear at about the middle third, and for a large num- 
ber of segments consist of a single filament (Fig. 41b); at about the be- 
ginning of the last third another filament is added, while on the pos- 
terior segments there are three. 
The capillary sete (Fig. 43) have a long cylindrical inner part ; ashort, 
wide, flattened, outer part, tapering suddenly to a sharp point. 
The compound sete (Fig. 44) have a small, outer tooth; a large, stout, 
inner tooth. When highly magnified the stem shows a series of minute 
denticulations along one margin, near the appendix, and the membrane 
of the appendix shows an incised margin. 
