170 MOLLUSCA OF THE GULF OF MEXICO 140 



Distribution. — Cedar Keys, West Florida, to Barbados. 



pygmaeus Pilsbry, Tryon's Manual Conchology, 15, p. 23, pi 13, 

 f. 58, 59, 1893. 



DivStribution. — Cedar Keys and Key West, Fla. 



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