Sentence:  "Glycimeris generosa". Olympia, Washington Territory... The boys at Olympia call them ‘<WSD>Geoducks</WSD>'; they dig them on a certain sand bar at extreme low tide, and sell them to a merchant who ships them to Portland, Oreg... The boys inform me that the Indians on the Sound... dry them for food with the other clams. 
Meaning of the word marked with <WSD> tags:  The species of large saltwater clam (ver=161126), native to the northeast Pacific coasts from Alaska to Washington State, distinguished by its deep burrowing and long unprotected siphon;  a member of the species;  its flesh as a seafood.