Eostichopus new genus is erected for stichopodid holothurians whose ossicles include tables having large disks (>60 μm wide) with more than 12 perforations and having spires with two or more crossbeams and spines at every junction of crossbeam with pillar. In Eostichopus
arnesoni new species, tables have numerous disk perforations (up to 100) and spire crossbeams (up to 10) and there are unique reticulate rods in the tentacles. C-shaped ossicles are also present. E. arnesoni is known at present from Puerto Rico and Grenada at moderate depths.
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