Natural history and propagation of fresh-water mussels . Fig. 2.—A young mussel, Sytnpkynotacostata, six days after completing thestage of parasitism. (Lefevre andCurtis.) Fig. I.—Glochidium olSymphynota costata in process of transformationduring stage of parasitism. (Lefevre and Curtis.) r.

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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherwashi, bookyear1921