In this subfamily are contained those genera in which the anterior toes are divided to the base. In one genus there is no hind toe but in the others this is well developed. The wing is shaped as in the Tringinae, with the first primary the longest; the bill is slender, flexible and either quite straight or slightly bending downwards; the inner secondaries are very nearly as long as the primaries; the tail is moderate and nearly square, some species having the median rectrices slightly acuminated and projecting beyond the others of which they, in consequence, have been placed in a separate genus by some authors.
Key to Genera.
A. No hind toe CROCETHIA, P. 231.
B. A hind toe.
a. Bill spoon-shaped, greatly expanded at the tip..................EURYNORHYNCHUS, p. 232.
b. Bill slender, not spoon-shaped..................EROLIA, p. 233.