314 ANNELIDA FROM BERMUDA. 
The dorsal cirri are very long and delicate; they have a stout basal 
article, which, on the anterior segments, is merged in the base of the 
upper lingula (Fig. 30); further back the lingula has the appearance 
of arising from the base of the cirrus (Figs. 31, 32). The dorsal cirr1 
increase in length gradually, backward, and appear to gain much more 
than they really do, owing to the shortening of the other parts of the 
foot. 
On the anterior segments the free portion of the upper lingula (Fig. 
30) is about one-third as long as the dorsal cirrus, delicate, conical. 
The upper ramus is as long as the free part of the upper lingula, but 
falls a little short of its apex; in form it is like the lingula. The ven- 
tral ramus is bi-labiate, the anterior lip much the longest, conical, and 
minute at extremity (Fig. 30); basal three-fourths stout, with strongly 
convex sides. The posterior lip is very broad, completely concealing 
the base of the anterior lip in a posterior view (Figs. 30, 32); sides 
nearly straight, apex bluntly and irregularly rounded. ‘The inferior 
lingula is long, conicai, swollen at base. The ventral cirrus arises 
some distance within the base of the ventral lingula, and reaches nearly 
to its apex; it is very delicate, conical. : 
There is a progressive diminution in size of all parts connected with 
the feet from before backward, with the exception of the cirri; the 
lingule, especially, become much smaller, falling short of the rami; 
but the cirri elongate, the ventral cirrus finally reaching beyond both 
lingula and ramus. 
The sete are of three kinds: those of the dorsal ramus for the most 
part with delicate capillary appendix; the points of the stem nearly 
equal in length (Fig. 33); with these, in the lower part of the bundle, 
a few faleate sete (Fig. 35); in the ventral ramus there are two bundles 
of sete; the upper bundle is composed mostly of sete with appendix 
similar to those of the first kind, but with one of the terminal points of 
the stem much longer than the other (Fig. 34); there are also a few of 
the other two forms; the sete of the lower bundle are mainly falcate 
(Fig. 35), with also a few similar to Fig. 34. 
Anal segment simple, cylindrical; anal cirri as long as the dersal 
cirri, and like them in all respects. 
Body strongly convex above; slightly convex below; tapering a little 
along a few of the anterior segments, and also along the posterior third. 
Length of only entire specimen, 60™™. 
Width, 4.5™™, 
Number of segments, 92. 
