by Ronald D. Oesch
Extremely detailed descriptions and excellent illustrations, combined with a key to the species, make it possible to positively identify any species of Naiade from this area. Extensive information for each species includes synonomy, nutritive and reproductive anatomy, shell description, comments, reproductive period, and commercial value and is accompanied by 3 black/white drawings (the exterior of the left valve and the interiors of both valves) and 2 distribution maps (Missouri and the USA). Introductory pages discuss history, shell structure, internal anatomy, reproduction, economic importance, and ecology. 1984, 270pp, softbound, 6" x 9", (SW 1.25 lbs)