Dictyuchus (47)--771
    collections named by genus only (47)--779
    excluded taxa (47)—781
    imperfectly known species (47)--780
    key to species (47)—772
    species of (47)--772 et sqq.
        achlyoides (47)--781
        carpophorus (47)--781
        clavatus (47)--782
        lucknowensis (47)--782
        magnusii (47)--783
        missouriensis var. moruzzi (47)--784
        monosporus (47)--772
        pseudoachlyoides (47)--784
        pseudodictyon (47)--777
        sp. Coker and Braxton (47)--784
        sp. Kobayasi and Konno (47)--785
        sp. Scott (47)--785
        sterile (47)--784
        variabilis (47)--780
        521 Johnson (47)--785
Distribution and abundance (4)--58
    community and habitat types (47)--70
    in aquatic systems (47)--59
        lake and stream sediments (4)--61
        lakes and ponds (4)--59
        streams (4)--62
        wells (4)--63
    relative to pollution (4)--63
    terrestrial/aquatic interfaces (4)--68
    terrestrial habitats (4)--66