Definitions

Preischium

• Segment of endopod between protopod and ischium, rarely present. [McLaughlin, 1980]
• In inner branch (endopod) of thoracopod, segment between basis and ischium. [Stachowitsch, 1992]
• First of basically six segments (preischium, ischium, merus, carpus, propodus, dactylus) of inner branch (endopod) of thoracopod. Located between basis and ischium and may be variously fused with basis. [Stachowitsch, 1992]

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Citing this glossary: For individual definitions, please cite the specific author(s) of the definition.
To cite the glossary as a whole, please use:
Martin, J.W., N.D. Pentcheff, D. Striley, C. Perrodin, A.R. Wall, J. Wall, and J. Zieba (editors). Crustacea Glossary. Crustacea Department, Natural History Museum of Los Angeles County. Accessed: 30 Jan 2025. URL: https://research.nhm.org/glossary