Lumbrineris cingulata Species
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“Lumbrinereis cingulata, Ehlers.
Ehlers, 1897, p. 76, pi. v, figs. 119-124.
OCCURENCE. St. WS 755 (2); WS 762 (2); WS 834 (2).
SPECIFIC CHARACTERS. I have with some hesitation attributed these specimens to Ehlers' species. One complete example measures 59 mm. by 2 mm. for 82 chaetigers and there are several much larger fragments measuring 3-4 mm. in breadth. Only the specimens from St. WS 762 show traces of the speckling regarded by Ehlers as characteristic of this species. Ehlers describes this species as speckled on both surfaces with small dark spots, except intersegmentally and except for a narrow dorsal transverse band in the middle of the segments. In several of these specimens, but not in all, a transverse ridge or thickening of the cuticle can be seen in the middle region of the body connecting the feet across the back, in exactly the position of the mid-segmental un-pigmented band in the speckled specimens. Moreover, there is a marked tendency in the middle region for the front border of the segments dorsally to overlap and to be folded over the hinder border of the segment in front.
The head is bluntly ovate or more or less globular. The first buccal segment is apparently incomplete ventrally, where it is replaced by a prolongation of the second buccal segment.
The anterior lip of the foot is low and rounded and the posterior shows a short, blunt prolongation which has no relative increase in the hinder region. In the front region the bristles consist of winged capillaries and compound crochets with narrow flanges. Between the 10th and 20th chaetigers the compound crochets are replaced by simple crochets, and in the middle and hinder regions a different type of capillary bristle takes the place of the ordinary winged capillaries. In the middle and in the hinder region except for a few terminal segments there are one or two bristles about equal in length to the crochets and having very wide wings confined to a short area not far below the fine hair-like tip. These wings are curved backwards in a characteristic manner. The feet are supported by two brown acicula. In regard to the jaws M. II have four to five teeth, M. Ill are bidentate, and not unidentate as Ehlers records: the second tooth is small and easy to overlook. M. IV are unidentate. The lower jaws are striated in front.
REMARKS. Apart from the speckling which cannot always be seen in preserved specimens, the outstanding features of this species are the more or less globular prostomium, the characteristic capillary bristles of the middle and hinder regions, and the presence of two teeth in M. III.”
Apart from the speckling which cannot always be seen in preserved specimens, the outstanding features of this species are the more or less globular prostomium, the characteristic capillary bristles of the middle and hinder regions, and the presence of two teeth in M. III.
|Type Status||Catalog No.||Date Collected||Location||Coordinates||Depth (m)||Vessel|
|96648||9/27/1961||South Atlantic Ocean||53.2° S , 66.8° W||Eltanin R/V|
|96649||3/27/1966||South Atlantic Ocean||53.2° S , 70.8° W||Eltanin R/V|
|97732||5/21/1971||South Atlantic Ocean||54.76° S , 64.16° W||0||Hero R/V|
|97733||5/24/1971||South Atlantic Ocean||54.78° S , 64.39° W||51||Hero R/V|
|97734||11/4/1971||South Atlantic Ocean||54.84° S , 64.49° W||67 – 71||Hero R/V|
|97735||11/10/1971||South Atlantic Ocean||54.78° S , 64.39° W||Hero R/V|
|97736||12/4/1962||Scotia Sea||54.1° S , 58.8° W||119||Eltanin R/V|