Morphologic Description: Carapace ovate, LV larger than RV. Hinge merodont, with elongate crenulate terminal cusps in RV, separated by somewhat curved to nearly straight, finely crenulate to smooth furrow; marginal areas narrow except in front where vestibule is present; radial canals short, straight; adductor scars in vertical row of four, with arrowhead-shaped antennal scar in front and two mandibular scars below in front, crescent-shaped scar above this group in eye region. [Cythere aurantia Baird, 1838] (Treatise, Q343, fig. 268:4).
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