Crocethia Bill berg, Synops. Faun. Scand., i, (2) tab. A, p. 132 (1828).
Type by mon., Tringa alba Vroeg.
This genus, which contains but one species, the Sanderling, is very close to Erolia but is separated from that genus by possessing a hind toe; the bill and tarsus are about equal in length.