Natural history and propagation of fresh-water mussels . |fl|b flQ^ VB ^^Ir Juveniles of 20 species of mussels found in the artificial ponds at the U. S. Fisheries BiologicalStation within two years from the time of construction of the ponds. Reading from left to rightthese are; Top row: Anodonta imbccillis, Anodauta corpulenta, Anodonia suborbiculata, Arcidcns confragosus. Second row: Strophitits edentulus .Symphynota complanaia, Lampsilis alata. Lamp si lis laciisiiina. Third row: Lampsilis capax, LarnPsilis gracilis, Lampsilis reitlricosa. Lampsihs luteola. Fourth row: LamPsilis subroslrata
Natural history and propagation of fresh-water mussels . |fl|b flQ^ VB ^^Ir Juveniles of 20 species of mussels found in the artificial ponds at the U. S. Fisheries BiologicalStation within two years from the time of construction of the ponds. Reading from left to rightthese are; Top row: Anodonta imbccillis, Anodauta corpulenta, Anodonia suborbiculata, Arcidcns confragosus. Second row: Strophitits edentulus .Symphynota complanaia, Lampsilis alata. Lamp si lis laciisiiina. Third row: Lampsilis capax, LarnPsilis gracilis, Lampsilis reitlricosa. Lampsihs luteola. Fourth row: LamPsilis subroslrata, Lampsilis Parva. Lampsilis ligatnentina. Oborana ellipsis. Fifth row: Plagmla donatijormis. Oblig-iiarta reflexa, Quadrnla plicata, Quadrula undata. All reproduced natural size excepting the two right-hand figures in top row which are reducedone-half. (Photographed by J. B. Southall.) Bull. U. S. B. F., 1919-20. Plate XXI. Ant(iri©r ^ retractor mus&fcAntarioradductor mu&cUTrotractor tnusclii;fosition 0/ mouth -(bacK batwaan /Labial palp^) /. OuIerUft labial palpInner Uj 1 palp Visceral mass Lunula Uefl manlle- fg^I*&rior rc\<^Xt^riotr adductor muaclc ^wura-brantniaichamber RigUt mantle,Owtsr ri^nt ^tllinn<ir right ^illinner le-j t ^til Fig. I.—The structure of a fresh-water mussel. (Based upon drawing of white heel-splitter. Sytnphynota tomManata. from Lefevre and Curtis, 1912.)
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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherwashi, bookyear1921
