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Description

provided by NMNH Antarctic Invertebrates

“Lepidofimbria oculata, new species

(Plate 8, Figs. A-C)

Record: 14:1 sta. 1009 (1, TYPE).

Description: A short fragment and disconnected anterior end are available, presumably part of the same individual. Length of six antero­median segments is 4.5 mm and width is 4 mm. The dorsum is convex and smooth, except for a papillar lobe superior to the base of the dorsal cirrus. The ventrum is concave, with a deep neural groove; each seg­ment is crossed by three large papillae on a side; they form a row ex­tending across the ventrum. The body cavity contains small spherical white bodies which may be immature ova. A nearly complete calanoid copepod projects from the broken alimentary tract, with the cephalic end directed posteriorly, suggesting that the copepod was captured head first.

The prostomium (Fig. A) is slightly broader than long, smooth, flat dorsally, and conspicuous for the large, round anterior black eyes; the posterior eyes are much smaller and somewhat diffuse.

Parapodia are most unusual for the heavily fimbriated ventral cirrus (Fig. B) which is coiled and turned up behind the neuropodium. Noto­podia have a thick short cirrophore; the style is unknown. Notosetae are absent. Neuropodia are larger, provided with simple, acicular setae of one kind; each is thickest near its emergence from the lobe, then tapers distally to a slightly hooked tip (Fig. C).

This species departs widely from known Lepidonotinae in having unusual ventral cirri and neurosetae. It has large, well developed eyes, even though coming from abyssal depths.

Distribution: Weddell Sea, in 2818-2846 m.”

(Hartman, 1967)