Physical Characteristics

Body approximately 0.31 in (8.1 mm) long (base of rostrum to tip of telson of largest individual); carapace 0.23 in (6 mm) long, ovoid, deepest one-third from front, 1.3-1.5 times longer than deep; posterior edge emarginate, exposing at least part of pleonite one dorsally. Rostrum 0.4 carapace length, three times longer than wide, without keel (ventral projection), but with proximal midventral device that loosely interlocks with eye structures. Eyestalk strongly curved (banana shape), surface with denticles; live at deep-sea hydrothermal vents, without visual surface (pigmentation).

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