314 ANNELIDA FROM BERMUDA. 



Tlie dorsal cirri are very long and delicate ; tliey 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 cirri 

 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 ux)per lingula (Fig. 

 30) is about one-third as long as the dorsal cirrus, delicate, conical. 

 The np])er 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 bilabiate, the anterior lip much the longest, conical, and 

 minute at extremity (Fig. 30); basal three-fourths stout, with strongly 

 €onvex 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 irregularl}- rounded. The inferior 

 lingula is long, conical, swollen at base. The ventral cirrus arises 

 some distance within the base of the ventral lingula, and reaches nearly 

 to its ai>ex ; 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 

 lingulae, especially, become much smaller, falling short of the rami; 

 but the cirri elongate, the ventral cirrus finally reaching beyond both 

 lingula and ramus. 



The setse 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 falcate setse (Fig. 35) ; in the ventral ramus there are two bundles 

 of setjc ; the upper bundle is composed mostly of setae 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 seta; 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 dorsal 

 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, GO' 



Width, 4.5""". 



Number of segments, 92. 



tmm 



