Kinberginereis inermis (Hoagland 1920)

Nereis (Leptonereis) inermis Hoagland, 1920:608, pl. 47: figs. 8–12

TYPE-MATERIAL.—Cliff Island, Philippine Islands, 13 meters, mud bottom, Albatross station D5346, 26 December 1908—holotype (USNM 18947). The holotype consists of an anterior fragment of 29 setigerous segments, 12 mm in length, and 5 mm in width, including parapodia. The pharynx is not extended.

DESCRIPTION.—Body flattened dorsoventrally, segments much compressed. Prostomium partially withdrawn into achaetous tentacular segment, with deep anterior notch between bases of conical frontal antenna; stout palps more or less telescoped, appearing two to three segmented; eyes moderately large, on posterior half of prostomium (Figure 17a). Tentacular segment about equal in length to following segment but larger and inflated laterally and ventrally; tentacular cirri with long cylindrical cirrophores; styles of longest cirri extending to about setiger 13 (posterodorsal pair missing—perhaps even longer). Parapodia of first two setigers with dorsal cirrus, single notopodial ligule, and slender notoaciculum with curved distal tip; neuropodium similar to those of following segments (Figure 17b,c).

Anterior biramous parapodia (Figure 17d,e) with cirriform dorsal cirrus and two conical notopodial ligules subequal in length; small bundle of notosetae emerging between ligules; notosetae all homogomph spinigers with long blades, finely serrated along one side (Figure 17h). Neuropodium with bilobed presetal lobe—subequal conical lobes and shorter rounded postsetal lobe; subsetal neuropodial ligule similar in size and shape to notopodial ligules. Neurosetae very numerous; upper bundle all homogomph spinigers with long blades similar to notosetae (Figure 17h); lower bundle slightly heterogomph or hemigomph spinigers, upper few with blades shorter, curved, with long spines along basal part (Figure 17i), middle ones with blades longer, straight, and finely serrated along one side (Figure 17j), and lower ones with shorter blades (Figure 17k). Ventral cirri tapered, shorter than neuropodial ligule.

More posterior parapodia (Figure 17f,g) somewhat modified; cirriform dorsal cirri more elongated, extending far beyond notopodial ligules; upper notopodial ligules decreasing in size, becoming considerably smaller than lower notopodial ligules.

Pharynx (observed only when cut) without paragnaths or papillae except for fleshy knobs on areas VI of oral ring. Hooked jaws amber-colored, with serrations or teeth along most of concave border—about 20 teeth.

DISTRIBUTION.—Philippine Islands. In 13 meters.

Rullierinereis new genus

TYPE-SPECIES.—Leptonereis zebra Rullier, 1963. Gender: feminine.

DIAGNOSIS.—Prostomium subpyriform, with paired frontal antennae, biarticulate palps, and two pairs of eyes. Tentacular segment apodous and achaetous; four pairs of tentacular cirri with distinct cirrophores. Parapodia of first two setigers subbiramous; notopodium represented by dorsal cirrus and single ligule. Dorsal cirri at bases of upper notopodial ligules. Notopodia with two ligules, upper one sometimes fused with dorsal cirri (in posterior notopodia of zebra; from setiger 3 on, in bahamensis). Neuropodia with acicular lobes and lower ligules. Ventral cirri short, tapered. Notosetae homogomph spinigers and, more posteriorly, homogomph falcigers. Neurosetae homogomph and heterogomph spinigers and heterogomph falcigers. Pygidium with paired anal cirri. Pharynx with paired jaws, without paragnaths or papillae (latter present on oral ring in bahamensis).

ETYMOLOGY.—The genus is named for François Rullier, eminent worker on the Polychaeta.

About 13 m.

Philippine Islands: Palawan Island (Malampaya Sound, Cliff Island).

Mud, at shallow waters.