Lepidonotus setosior sp. nov.
Readily distinguished from L. squamatus, coeloris and other species recorded from the Pacific coasts of North and South America by the greater length and coarseness of the notopodial setae, these being stout pointed spines often nearly attaining the ends of the neuropodials and thus exceeding the latter in actual length. The notopodials, however, are obviously more slender than the neuropodials; they are much more numerous than the neuropodials and form a dense, subcylindrical, spreading group. The elytra are characterized by bearing over their free portions numerous high and stout, conical, hard or chitinous tubercles which are, however, much less dense than the very different rounded eminences of squamatus, these cones often roughened; between these high cones, and over the covered part of the elytra as well, numerous small rounded tubercles or nodules; much more slender and shorter, erect, conical papillæ present on the outer border of at least some of the elytra but no truly ciliate fringe could be detected in the types. The elytra are long, subelliptic in outline, and are arranged either with axis nearly longitudinal or very oblique, the most anterior elytra, however, subcircular. Eyes on each side unusually widely separated, the anterior one low on side, a little ectocaudad of base of anterior process. Anterior processes of prostomium about four-fifths as long as the median ceratophore and much more slender. Lateral tentacles much more slender than the median, and, exclusive of the filamentous tip, falling short of attaining the middle of the style of the latter exclusive of its tip; styles biannulate with black as frequent, the basal process also black. Median tentacle surpassing palpi in length; subapical swelling pronounced, much more so than that of the laterals. Tentacular cirri and notocirri similar in form to the median tentacle. Anal cirri proportionately somewhat shorter than in squamatus. Color of venter and parapodia grey; elytra at present grey over a fulvous ground. Setae dark amber to nearly ferruginous, darker than usual in squamatus. A paratype has elytra fulvous of dilute ferruginous cast with black mottlings.
Length, 18 mm.
Type—M. C. Z. 2, 141.
Lepidonotus leius sp. nov.
A species characterized by its rather thin, easily detached elytra which have their surface wholly smooth or, at most, showing a few scattered minute points; closely fringed along the outer margin, about the cephaloectal region, and for a short distance along the anterior edge. Elytrophore attached cephaloectad of middle. Anterior and ectal margins of a typical elytron only weakly convex, the cephaloectal corner subrectangular though rounded; caudal margin strongly convex, the inner end of elytron like the end of an ellipse but with lower margin the more oblique. Elytra transverse or but little oblique, strongly overlapping in the middorsal line. Prostomium of usual general form. Eyes large and black, the anterior ones near middle of main region of prostomium, the posterior ones closer together and at caudal end. Only one tentacle, a lateral, retained in type. This characterized by a short cylindrical style which to the base of the distal swelling is scarcely longer than the basal process, and especially by an unusually long slender tip which is as long as the rest of the style. The parapodium of the first segment bears two prominent setae in the usual position; tentacular cirri of usual form, the filiform tips long, when bent back reaching proximad of middle of style. Notocirri also characterized by their long terminal filaments. Neuropodial setae light amber-colored; arranged in the usual vertically elongate patch, presenting a narrow dorsal half and a broader ventral one. In the ventral part of the patch normally four longitudinal rows of three setae each, while the narrower upper region shows also about four rows but with only two or one in each. The setae have the usual general structure. Notopodials numerous, reaching beyond distal end of neuropodia and sometimes nearly to middle of the neuropodial setae. In the type the elytra are light brown. The tentacles and notocirri ringed with black as common.
Length, 13 mm.; width exclusive of parapodia, 3 mm.; width to tips of setae, 6 mm.
Dredged.
Type—M. C. Z. 2, 142.
PHYLLODOCIDAE