This taxon appears twice in the same publication, once on page 130, pl. 28, figs. 1, 2, then again on page 136, pl. 34, fig. 1, 2 [the second illustration appeared in the following issue, dated July 15, 1921]. The descriptions differ (size, number of costae) but have the same type locality and list the same number of specimens examined. The figures are similar, but do not represent the same specimen. The taxon originates from the first description (p. 130, pl. 28, figs. 1, 2). The second appearance of this taxon in the same issue is likely a lapsus calami on the part of Maynard. It is listed twice in the sales catalog (Maynard, 1924?:[3] nos. 63 [as coufusa], 94, both from Little Harbor).