386 CHARADRIID. 
Ptl. hiem. Supra margaritaceo-cinerea, plumis singulis cinereo-albo marginatis ; dorso postico, uropygio et 
supracaudalibus medianis nigris vel nigro notatis; tectricibus alarum minimis nigris albo marginatis, 
medianis cinereis, majoribus late albo terminatis; tectricibus primariorum et primariis nigris, his intus 
albis, vel basin versus pogonii externi albis, rhachidibus albis ; secundariis albis, externis apicem versus 
brunneis, intimis dorso concoloribus ; rectricibus medianis nigricantibus, reliquis cineraceis, intus albidis, 
rhachidibus albis ; pileo cinereo, plumis nigro anguste striolatis; loris, facie laterali et corpore subtus 
toto albis; subalaribus et axillaribus quoque albis: rostro et pedibus nigris; iride saturate brunnea. 
Long. tota circa 7°2, ale 4-9, caude 2:0, culm. 1-2, tarsi 0°95. (Descr. avis adulte ex Chiapam. Mus. 
nostr.) 
Ptil. estiv. Supra ferruginea, plumis medialiter nigris ; facie laterali, gutture et prepectore totis et pectoris 
summis lateribus ferrugineis, nigro striolatis, his nigro fasciatis. 
Hab. Norta America, probably nesting throughout the Arctic Regions, and known to 
breed in Grinnell Land !¢ 18.—Mexico (Sumichrast 18), Mazatlan (Grayson !), San 
Blas, Tepic (Richardson 5), San Mateo, Tehuantepec (Sumichrast '), Misantla, 
Santa Ana (Ferrari-Perez '®), Jalapa (Ferrari-Perez 18, de Oca *), Santecomapam, 
Oaxaca (Boucard*), Progreso, Yucatan (Boucard +), Cozumel I.° 8 (Gaumer), 
Merida (Schott 1°); Brirish Honpuras, Cays on the coast, Northern Two Cays, 
Lighthouse Reef (0. 8.61515); Guaremaa, Carranza 16, Chiapam !8, Rio Nagua- 
late’ (O. S.).—Sourn America, both coasts in winter, to Chile, Patagonia, and 
the Galapagos Is. 1°; Sanpwicu Is. 18.—Arctic Regions of Europe and Asia, to the 
coasts of Africa, India, and Australia in winter 18; IcmLAnp }8. 
The Sanderling is a common visitor to the coasts of all countries of the Old and 
New Worlds during winter or on migration, but its breeding-haunts are in the Arctic 
Regions, and very few authentic eggs have been taken. It was found nesting in 
Grinnell Land by Colonel Feilden during the British Arctic Expedition under Sir 
George Nares, and it is believed to have bred in Iceland }®. A nest was obtained by 
MacFarlane on the tundra east of Anderson River 17, and the species will probably be 
found to breed throughout the whole circumpolar region. 
During the autumn migration the Sanderling is found in some numbers on the 
coasts of both hemispheres, passing southward to its winter-quarters. It seems also 
to winter in certain localities in Central America. Grayson says that the species is a 
wanderer at Mazatlan, being sometimes found in flocks on the beach in September, 
October, and the winter months!. Salvin met with it on the Pacific coast of 
Guatemala, where many individuals were frequently seen’. 
Wherever C. arenaria is found on its autumn migrations, it is generally noticed 
in flocks, keeping apart from the society of Dunlins and other Waders, and is 
recognizable by the amount of white which the bird displays when on the wing. 
Its habits otherwise resemble those of the small Sandpipers which frequent sea- 
beaches. 
The nests, so far as hitherto discovered, consist of a depression in the open ground 
or in a dwarf willow, lined with decayed leaves or catkins. The eggs are four in 
number, ‘“‘ buffish or brownish-olive, faintly spotted with olive-brown or bistre, with 
