253. Sterna anaestheta.
THE BROWN-WINGED OCEAN-TERN.
Male 14". Legs black. Bill dusky red. Crown and lores black. Front of forehead, eye-stripe, and nape white. Quills blackish. Rump and mantle umber-brown. Tail grey-brown, outer rectrices white on outer webs. Tropical and subtropical seas. One or two eggs (1.72 x 1.2), white, finely spotted. (.1. 992. B. 1513.)