LEODICE PANAMENA. 259 



each has distally a double curve, the more distal curve being the more pronounced. 

 The tips project freely beyond the surface of the parapodium, as usual. The 

 single crochet, as usual, extends within the parapodium obliquely across the 

 acicula and setae to emerge at the base of the neurocirrus. It curves moderately 

 ventrad, i.e., is convex ectodorsad. At the tip it is bidentate, presenting the 

 ordinary, suberect, stout apical tooth and a very stout, somewhat conical, sub- 

 apical tooth, which in outline has the upper edge convex, the lower concave. 

 The membranous guards rise above the level of the apical tooth and narrow to a 

 subacute angle at the tip. (Plate 60, fig. 1). The pectinate setae have the 

 ordinary general structure. Each presents a delicate stalk bearing distally an 

 elongate, narrowly cuneate appendage, the distal edge of which is finely pectinate. 

 At one end of the series of teeth is a more elongate process, or mucron, of moder- 

 ate length. (Plate 60, fig. 3). The principal dorsal setae are capillary; they are 

 non-limbate and distally reduced to a very fine tip which is usually moderately 

 curved. The compound setae of the ventral group are much coarser than the 

 capillary type. In these the shaft is long, gently curved, and of nearly uniform 

 diameter to near the distal end where it enlarges subclavately ; on the convex 

 side, toward the distal end, the border is crossed by fine, oblique sulci giving 

 the edge a weakly serrate appearance. The distal piece is distally bidentate, 

 presenting an erect apical tooth and a basally broad, low, conical subapical 

 tooth. The subbasal prominence is low and rounded with, in outline, a short 

 horizontal upper edge, so that it often appears like a blunt tooth. The mem- 

 branous guards rise considerably above the level of the tip of the apical tooth 

 and narrow to a point distally. (Plate 60, fig. 2). 



The maxillae are blackish in color and are well chitinized. The mandibles 

 are also blackish excepting the masticatory plates, which are white. The mandibles 

 are relatively narrow across the anterior end. The masticatory plates relatively 

 short from side to side. Their projected anterior edges meet at a very obtuse 

 angle, but little less than one hundred and eighty degrees. The edges are 

 straight and are but finely and very weakly wavy, presenting no distinct teeth 

 or excisions. Each plate at its outer end has the usual slight indentation. The 

 stems are nearly straight. They are broad, narrowing from the middle caudad 

 and diverging from each other. (Plate 60, fig. 4). Maxillae I have the piece 

 formed by the united carriers very elongate. It is narrowest anteriorly, the 

 nearly straight sides diverging moderately caudad and rounding in about the 

 ectocaudal corners, the caudal end convex. The carrier has its upper surface 

 somewhat concave. The blades are broad, especially proximally, and are 



