Strophiops flacida Maynard and Clapp,1921
Maynard and Clapp in Maynard, 1921b:152, Plate 48, figs. 3, 4 [Plate 48 was never issued].; Harasewych et al., 2007:515, fig. 232.
Gould and Woodruff (1986:481) regarded S. flacida to be a ribby form of Cerion agassizi Dall, 1905.
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