Unionid Mollusks 
89 
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with a list of the other unionid species of the Waccamaw River System. 
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, and Arthur H. Clarke. 1983. A new spiny mussel, Elliptio ( Can - 
thyria) steinstansana (Bivalvia: Unionidae) from the Tar River, North 
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Porter, Hugh J. 1985. Molluscan census and ecological interrelationships. Rare 
and endangered fauna of Lake Waccamaw, North Carolina, watershed 
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restoration, 1978-1981. N.C. Wildl. Res. Comm, and Inst. Marine Sci., 
Univ. North Carolina, Chapel Hill. 
, and Karen J. Horn. 1980. Freshwater mussel glochidia from Lake 
Waccamaw, Columbus County, North Carolina. Bull. Amer. Malacol. 
Union Inc. for 1980:13-17. 
, and 1983. Habitat distribution of sympatric popluations 
of selected lampsiline species (Bivalvia: Unionoida) in the Waccamaw 
drainage of eastern North and South Carolina. Bull. Amer. Malacol. Union 
Inc. 1:61-68. 
, and 1984. Freshwater Mollusca of upper Waccamaw 
River, North and South Carolina. J. Elisha Mitchell Sci. Soc. 97:270. 
Shelley, Rowland M. 1972. In defense of naiades. Wildlife in North Carolina 
36:4-8, 26-27. 
. 1983. Occurrence of the unionid mollusk Anodonta implicata Say 
in North Carolina. Nautilus 97:145-146. 
Walter, Waldemar M. 1956. Mollusks of the upper Neuse River Basin, North 
Carolina. J. Elisha Mitchell Sci. Soc. 72:262-274. 
Accepted 27 May 1986 
