My specimens were obtained on the banks of the Plata and at Valparaiso. The specimen from the latter country differs from those procured at the former, in the absence of the black collar on the breast, of the black streak running from the eye to the corner of the mouth; in the plumage of the back and back of head having a lesser tinge of red; and especially in the feet being black, and tarsi blackish, instead of both being orange, as is the case with those killed on the shores of the Plata. I have not, however, thought it desirable to make two species of these birds, not having a larger series of specimens for comparison.
2. Hiaticula trifasciatus. G. R. Gray.
Charadrius bifasciatus, Licht. Vog. Verz. p. 71.
—— trifasciatus, Wagl. Syst. Av. sp. 31.
I procured two specimens of this bird at Bahia Blanca, in Northern Patagonia.
3. Hiaticula semipalmata. G. R. Gray.
Tringa semipalmata, Temm.
Charadrius semipalmatus, Caup. Isis. 1825, p. 1375, t. 14. Wagl. Syst. Av. sp. 23.
Bonap. Am. Orn. iv. pl. 25, f. 4.
Galapagos Archipelago.