Part II. 



Average observed morphological shell measurements of 



commercial mussel species of various ages from Reach 15 



of the Upper Mississippi River, 1987 and 1994-95. 



Description 



Page 



Table G-9 : Amblema plicata - Threeridge 



Table G-10 : Megalonaias nervosa - Washboard 



Table G-11 : Quadnila qiiadnila - Mapleleaf 



Table G-12 : Quadnda pustulosa - Pimpleback 



Table G-13 : Quadnda metanevra - Monkeyface 



G-11 

 G-12 

 G-13 

 G-14 

 G-15 



Page G-10 



Whitney et al., Unionid Sun-ey - Reach 1 5 UMR 



