Unionid Mollusks 
85 
Fig. 32-38. Elliptio complanata, localities in parentheses. 32 (14), 33 (26), 34 
(15), 35 (18), 36 (7), 37 (4), 38 (12). Scale line = 10 cm. 
Localities : M, and an unspecified site in Wilmington, New Hanover 
County (Johnson 1970). 
Remarks'. Published concepts of this species vary greatly, and a diversity 
of forms are currently assigned to this binomial by different malacolo- 
gists. Only a comprehensive taxonomic revision can clarify this 
confusion. 
Elliptio marsupiobesa Fuller 1972. 
Localities : I, J, K. 
Remarks'. The small size, wedge shape, and yellow periostracum distin- 
guish the valves of E. marsupiobesa, which is named for its “obese” 
marsupium (Fuller 1972). It is known definitely from only these three 
