Publisher's Synopsis
Excerpt from An Account of the Crustacea of Norway, Vol. 7: With Short Descriptions and Figures of All the Species; Copepoda Supplement, Parts I and II, Calanoida, Harpacticoida (Part); With 16 Autotypic Plates
Specific Characters - Female. Body moderately slender, with the anterior division oblong oval in form, greatest width not nearly attaining half the length and occurring somewhat behind the middle; dorsal face only Slightly vaulted. Cephalosome nearly as long as the exposed part of the trunk, and exhibiting behind the middle dorsally a distinct transverse suture; anterior extremity narrowly rounded. Rostral filaments of moderate length and abruptly reflexed. Last trunkal segment completely coalesced with the preceding one; lateral lobes triangularly produced, and extending somewhat beyond the middle of the genital segment. Urosome comparatively short, scarcely exceeding in length of the anterior division; genital segment only slightly protuberant below, and about the length of the 2 succeeding segments combined; anal segment very small. Caudal rami scarcely longer than they are broad; apical setat well developed and somewhat divergent, the innermost but one, as usual, considerably longer than the others. Anterior antennae rather elongated, ex tending, when reflexed, to the end of the caudal rami. Posterior antennae and oral parts almost exactly as in X. Fallax. Natatory legs likewise of a very Similar structure, though having the spinules of the inner ramus fewer in number. Last pair of legs, however, rather unlike those in the said species, the outer 2 joints being, as in X. Borealis, completely coalesced to an elongated some what curved piece armed at the end with only 3 comparatively short, subequal Spines, edges of the piece nearly smooth, with only a few cilia at the outer curvature.
Body in the living animal highly pellucid, with only a faint rosy pig ment at the end of some of the segments.
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