Classification: State Extirpated
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The shell of the pistolgrip is elongate, rhombidal and covered with pustules. The posterior ridge is prominent. It may reach 70 mm or more in length. The pseudocardinal and lateral teeth are well developed. The nacre tends to be purple and at times tinted with pink.
Ovulation occurs from March to May (Jirka 1986), and gravid females are found from April through June (Gordon and Layzer 1989). Individuals of this species may, at times, be hermaphroditic (Van der Schalie 1970). Fish hosts have not been identified for this species.
General Life History For Mussels