Annelida of the Bermudas, 667 



portion of the median tentacle arising from the middle of its dorsal 

 surface and reaching well forward. The central portion, to which 

 the long, smooth, tapered, median tentacle was attached, is about 

 three times as long as broad, vase-shaped, and. attached to the ceph- 

 alic lobe by a slender, short stem, with a narrower, shorter, leaflike 

 lateral lobe (ctenidium) on each side. There are four eyes ; the 

 very large posterior pair are situated just at the base of this lobe and 

 the very small anterior pair lie just underneath the posterior edge of 

 the lateral lobes. There is a pair of conspicuous setigerous lobes, 

 reaching forward from the anterior surface of the cephalic lobe, each 

 of which bears a cirrus of moderate length, arising from its median 

 dorsal surface, above which is a cluster of numerous very fine, hair- 

 like setae, corresponding in number and form to those of the dorsal 

 bunch of the lobes of the parapodia. Arising from the ends of these 

 lobes are setre of various forms, similar to those of the ventral bunch 

 of the feet. Arising from the sides of the head, and partly consoli- 

 dated with the cephalic lobe, are a pair of long setigerous lobes simi- 

 lar in form to those on the following segments. The first one is 

 without a cirrus, but at its base is a conspicuous fleshy lobe, to the 

 upjjer surface of which is attached the first pair of scales, or elytra ; 

 underneath and reaching out from the side of this lobe is the short 

 dorsal cirrus of the second pair, which has a large swollen basal j^or- 

 tion and a short tapered end. 



Each of the following segments is furnished with a similar, but 

 larger, dorsal cirrus, to the upper surface of the swollen basal por- 

 tion of which the elytra are attached (on segments 1, 2, 4, 6, 8, 10, 

 12, 14, 16, 18, etc.). Only a few of the anterior elytra are present. 

 These, which have a somewhat rounded form, are white and very 

 thin, with the posterior edge ornamented with a few short, unequal, 

 somewhat tapered filaments, and on the upper surface having very 

 minute, scattered spinules. A slender ventral cirrus is present on 

 all the setigerous lobes, those on the front of the head being much 

 longer than the others. 



From the ventral surface of the head arise the tentacle and palpi 

 (only those on one side of the head are perfect, but they were pre- 

 sumably arranged in pairs). Attached underneath the base of the 

 latei'al setigerous lobe is a moderately slender, smooth, tapered, lat- 

 eral cirrus, reaching to about the end of the ventral setas. 



Underneath the frontal, setigerous lobe arises a very long ,(3"^"), 

 stout, smooth, tapered palpus ; attached to the side of this and 

 somewhat underneath, is a moderately slender, smooth tapered 

 tentacular cirrus, about as long as, and similar to, the lateral cirrus. 



Trans. Conn. Acad., Vol. X. December, 1900. 



44 



