LEODICE NESIOTES. 255 



type is fourteen. The number seems to remain high (near twelve) throughout 

 most of the length. 



A bundle of fine, fiber-like, pale acicula extending into base of notocirrus. 

 Principal acicula black, stout, distally acutely pointed, gently doubly curved 

 distad; the tips projecting freely among the bases of the dorsal setae; two in 

 number in each parapodium. Setae of four kinds. The dorsal capillary setae 

 compose a rather small fascicle. The setae are transparent, fine, and narrowly 

 wdnged. Among these are the fine, transparent pectinate setae. Each of these 

 has the usual delicate stalk bearing the cuneate or subcampanulate head, the free 

 edge of which is finely pectinate, each tooth extending into a slender, curving 

 filament of considerable length. The compound ventral setae are coarse and are 

 yellow in color. The shaft of each is curved, with the concavity ventrad, and is 

 strongly clavately widened distad. The appendage, or blade, is short and is tri- 

 dentate, there being a distinct subbasal tooth in addition to the two distal ones. 

 The apical tooth is subvertical and gently curved; the subapical tooth is large, 

 subcorneal, and its axis makes a considerable angle with a line at right angles 

 to the axis of the blade ; the subbasal tooth has its upper line nearly horizontal ; 

 the membranous guard bulges a little between the subbasal and subapical teeth 

 and extends over the apical tooth, ending a Uttle above the level of the tip of 

 the latter in a low point; edge of guard apparently smooth. (Plate 57, fig. 7). 

 The crochets, occurring in the parapodia of the middle and posterior regions are 

 stout and black in color. Each, as usual, extends obhquely across the acicula, 

 its distal end lying near the base of the neurocirrus. 



The mandibles have the masticatory plates large, oblique, subelliptic and 

 white, each notched at the exterior end but with the anteromesal edge wholly 

 smooth; stems black, stout, attenuated caudad, weakly united anteriorly. 

 (Plate 57, fig. 6). Maxillae II heavy, black, the left with five stout teeth addi- 

 tional to the angle at anterior end of proximal smooth edge, the right with six. 

 Maxillae III on left side with six t^eth additional to a reduced one at angle of 

 the smooth proximal edge; right plate with ten teeth. The unpaired left plate 

 with four teeth. 



Locality. Marshall Islands. Depth, 12 fms. Expedition of 1899-1900. 

 A female specimen containing eggs came up on the anchor of the Albatross. 



In the character and arrangement of its branchiae this species belongs in 

 the same group as L. contingens. From that species and from L. hilobata it is 

 at once distinguishable by its much longer branchiae and the shorter, less crowded, 

 filaments of the latter. In general structure it resembles hilobata; but the 



