“Emaga laevis n. sp.
Figs. 33 a-33d
Material. Weddell Sea, in 3111-3697 m: Station 69-22. (holotype and 4 paratypes, USNM 47019-20); 69-23 (1 specimen).
Description. The short thick posteriorly tapering body is 16 mm long and 2.2 mm wide in the anterior end or widest part. Smaller specimens are about 4 mm long and 0.8 mm wide. The prostomium is smooth, flat, and trapezoidal, and the frontolateral margin is slightly wider and more prolonged (Figure 33b), with a pair of oval nuchal mounds at postectal margins without eyes or glandular ridges.
The oral cavity is occupied by a membrane which is broad, short, and flaring when everted and longitudinally folded when withdrawn; three pairs of short smooth oval lobes are attached at either side of the membrane (Figure 33a).
The achaetous peristomium is broad and smooth and nearly encloses the prostomium and continues ventrally as a smooth tumid shield. The first three setigers are short and broad, with paired simple lateral notopodia and oval elongated glandular areas within the notopodial bases. The glandular areas continue posteriorly through most of the thoracic setigers. Uncinigerous neuropodial ridges begin on setiger 4 and continue posteriorly through the thorax, or 11 segments. Uncini occur in single rows,
10-30 in a series; each is a thick short plaque with broad base and 5-6 teeth in 2-3 irregular rows (Figure 33c). In lateral view (Figure 33d) they appear to have three teeth in one row.
Abdominal neuropodia are ventrolateral; there are least nine pairs. Each pair is accompanied by a small oval papilla in dorsolatera I position. There are only a few abdominal uncini in each fascicle (6-10), arranged along the rounded edge of the torus; they are similar to but smaller than thoracic uncini. A pygidial end is lacking.”
(Hartman, 1978)
