1903.] NATURAL SCIENCES OF PHILADELPHIA. 455 



length of the somite, are stout, not tapered, obliquely truncate, and 

 bear a single blunt, conical postsetal process which arises from the 

 ventro-lateral angle and is directed outward and shghtly caudad; a 

 low welt passes around its base anteriorly. 



The setae are arranged in each foot in a simple ciu-ved rank between 

 the postsetal process and the presetal welt. In the anterior parapodia 

 only slender setae occur, and are arranged in two somewhat divergent 

 groups, of which the ventral includes 4 or 5, the dorsal 8-12. All are 

 pale brown, long, slender, simple, sharp-pointed and wingless, Avith a 

 gentle sigmoid curve. After about the first 20 somites the setae of the 

 dorsal bundle become stouter and of a deeper color. More posteriorly, 

 in the type at XXVI on one side, XXVII on the other, a single stout 

 aciculum appears with its end projecting at the ventral end of the 

 series. It has much the form of a blunt pointed lead pencil and is 

 of a deep brown color. 



The color is an iridescent purphsh-brown with dark brown spots 

 above the bases of the parapodia, which tend to spread toward the 

 median line as incomplete narrow zones on each somite. 



Type, Suruga Bay, 3,709, 173 to 260 fms.; also Suruga Bay, 3,737, 

 3,738, 3,739, 65 to 167 fms. 



Notocirrus zonata sp. nov. (PI. XXVI, figs. 66, 67.) 



A piece of the posterior end consisting of upward of 120 somites, 

 and representing probably nearly ^ of the animal. It measures 65 mm. 

 long and 3 mm. wide including the parapodia, but not the setae. The 

 body is nearly circular and tapers toward the anus, which is guarded 

 by a pair of short broad lateral lobes representing a pair of cirri or per- 

 haps two pairs coalesced. 



The parapodia are described from the most anterior somite present ; 

 they are situated about twice as far from the dorsal as from the ventral 

 middle line, are rather small and slender, wdth a prominent posterior 

 ventral process, which is somewhat longer than the rest of the foot, and 

 is directed caudad and laterad. Dorsal papilla small but prominent. 



Setae 5, 2 in dorsal, 3 in ventral bundle, colorless or nearly so,with deli- 

 cate, tapering and winged tips, and sigmoid with the ends directed dor- 

 sad; those of the ventral bundle shorter and only slightly bent; of 

 the dorsal geniculate, the ventralmost, sometimes both of this bundle, 

 strongly serrated at the winged knee. 



The color is very striking; the ground, including the parapodia, is 

 pale yellow, the middle of each somite completely encircled by a rich 

 orange-brown zone. 



Type only, Totomi Sea, 3,729, 34 fms. 



