6 08 A. E. Verrill — Ihrbellaria, N'emertina, and 



Syllis (Chaetosyllis), sp. 



Several specimens of sexual zooids with two antennae, but other- 

 wise like Tetraglene, were taken at the surface. They i^robably 

 belong to some species of Syllis. 



Syllis (Typosyllis) annularis, sp. nov. 



A small species wath long slender antennae and dorsal cirri, banded 

 with dark green, and with long fascicles of setae, the posterior ones 

 longer and stouter with short, strongly incurved, acute blades; oeso- 

 phagus short, wide, brown, with a long acute tooth. 



Head large, broader than long, widest at the front, opposite ante- 

 rior eyes, narrowed backward ; front margin broadly rounded ; pos- 

 terior margin broadly emarginate. Eyes not very large, pale brown, 

 the anterior a little larger and separated from the posterior by a 

 space equal to their diameter ; a minute brown pigment speck at the 

 base of each palpus may represent the third pair of eyes. Palpi 

 large with broad swollen bases, rather longer than the head, abrujitly 

 narrowed on inside, at about the proximal third, blunt at tip. 



Tentacle stout, a little tapered, about ^ longer than the palpi, 

 strongly annulated, with about 20 annuli ; the distal ones longer 

 than broad. Antennae similar, a little shorter, the ends reaching to 

 within two or three distal annuli of the tentacle tip. Upper ten- 

 tacular cirri rather longer than tentacle, but of the same thickness; 

 lower one somewhat shorter. First dorsal cirrus larger and about ^ 

 longer than tentacle, of about 38 annuli, the distal half a little 

 stouter than the proximal ; most of the cirri on the first eight seg- 

 ments are similar to those of the first, or even longer, or about ^ 

 longer than the breadth of the body ; some still longer and moi'e 

 slender occur even back of the middle, conposed of 48 to 52 annuli, 

 with others about f as long, of 38 annuli, but the shorter ones 

 usually exceed the breadth of the body. 



Setae of anterior segments are in large fascicles of 5 to 10, all 

 compound, but with about 3 stouter acicula that project but little or 

 not at all ; the upper setae have narrow lanceolate, slightly curved 

 blades, 6 to 7 times as long as wide, with minutely bidentate tips ; the 

 lower ones have wnder and shorter blades, length to breadth about 3 

 or 4:1, with strongly incurved, acute, claw-like tips; posteriorly 

 most of the setae are longer with stouter stems, but the lower ones 

 are shorter ; there are about 6-8 in a fascicle, wnth two or three 

 stouter spiniform acicula, projecting but little ; the upper setee 



