94 Bulletin Vanderhilt Marine Museum, Vol. VII 



which is bluntly rounded. TTie median or inner paired tentacles 

 are similar, subequal in length, each consisting of about 18 arti- 

 cles. They are in contact with the peristome. The outer paired 

 tentacles are inserted near the base of the inner pair, arising adja- 

 cent slightly anterior and but little ectad to these. The sessile 

 eye-spot is situated dorsolaterally, outside of the base of the sub- 

 median tentacle, one black pigmented circular eye on each side. 

 The outer tentacles are distinctly shorter, each consists of 10 to 12 

 articles, similar but relatively slenderer than the median pair. 



The peristome is smooth, 2 millimeters long, or equal to the 

 combined length of the next two and two-thirds somites. The 

 anterior margin is straight on the dorsum but has a dual incision 

 on each side, these two sinuses enclosing a small rounded lobe. 

 There is a faint linear sulcus, running inward obliquely ventrad 

 from the lower incision. Below the aforementioned small lobe a 

 sinuous furrow defines basally the protruberant swollen anterior 

 margin and median area, or lower lip. The anterior margin of this 

 ventral lip is widely, rather deeply V- or U- shaped, concave. 



The second somite is fused laterally with the peristomium in 

 the usual way of members of this genus but is distinct above and 

 below. Each tentacular cirrus is short, being about one and one- 

 half times as long as the second somite, decidedly annulate, there 

 being seven thickish articles. 



The third to fifty-eighth somites are regular, undivided, short, 

 1 to 1.5 millimeters long, or from six to eight times wider than 

 long. Dorsally the somites are arched convexly, of moderate 

 length ; the posterior twenty segments have a median longitudinal 

 sulcus. The venter is flattish, with a narrowed, definite, neural 

 furrow extending its entire length. The posterior segments and 

 pygidium are broken off in all three specimens from the Society 

 Islands. 



The parapodia are medium to short in length, compressed in 

 the cephalo-caudad direction, the anterior ones being more so as 

 well as smaller. In the cephalic or caudal view they have the 

 contour shown in figure c. The parapodia are thickish proxi- 

 mally especially on the neuropodial lobe. The notocirri arise from 

 the dorsal of the base of the parapodia ; each is a slender tubular 

 or finger-like process, distinctly articulated, consisting of 12 or 

 14 rings each, the annuli being only three-fifths as long as thick ; 

 the apex bluntly rounded. The notocirri increase in size notice- 



