Chiridota heheva new species is described from cold seeps off Georgia and Florida, a shipwreck off Georgia, and an artificial wood-block habitat near Puerto Rico, in bathyal-abyssal depths of 2,200 3,300 meters. C. heheva is similar in some respects to C. hydrothermica Smirnov & Gebruk from Western and Southeastern Pacific hydrothermal vents, but it differs in structure of the tentacles and in color.
Rynkatorpa felderi new species was collected at a cold hydrocarbon seep at bathyal depths in the northern Gulf of Mexico. This is the first record of a synaptid holothurian from a chemosynthetic site, and the first record of the genus Rynkatorpa in the Atlantic; all other congeners are known from the Indo-Pacific.
Heteromolpadia joyceae, new species, has been collected from depths of 258–632m off the east coast of New Zealand. It is distinctive in having a tough, leathery skin, gray with scattered red spots. Tables in body wall 100µm in diameter with three larger perforations; tail ossicles with 15–20 perforations, a three-pillared spire, and an average length of 300µm. A key to the eight species of Family Molpadiidae now known from the New Zealand region is provided.
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