Local distribution of the polychaetous worm Clymenella torquata. This is likewise determined by the character of the bottom, but is almost the converse of that of Nereis pelagica, the present species being in a large degree restricted to a muddy habitat.
This closeup of the prostomium (bottom) and pygidium (center) of a coiled individual shows the partly-extended anal funnel on the pygidium, plus the setae on setigers 1 and 2 are partly visible. The notopodia are long capillary setae and the neuropodia are uncini.
This closeup of the setae on one of the segments shows the typical arrangement--long capillary notosetae (right) and a row of short uncini for neurosetae (left). Anterior is down in this photo.
This closeup of setiger 4 shows the notosetae and neurosetae, plus the then menbranous sheath that extends anteriorly around the posterior end of setiger 3 (bottom of photo).
Clymenella torquata (tentative), about 9 cm long, from 107 m depth in the San Juan Channel. The slanted head is at top right, and the orange funnel on the pygidium is partly extended. (Photo by: Dave Cowles, July 2014)
The Smithsonian Institution National Museum of Natural History, Department of Invertebrate Zoology. Year: 2018. Contact: omahoneym@si.edu.
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