Page [187].
CANADIAN PORCUPINE—Erethizon dorsatus.
Range—A native of the forests of North America, from the sixty-seventh parallel of north latitude south to Virginia and Kentucky, the eastern and western boundaries being Labrador and the Rocky Mountains.
Page [191].
CASPIAN TERN—Sterna tschograva.
Range—Nearly cosmopolitan; in North America, breeding southward to Virginia, Lake Michigan, Texas, Nevada, and California.
Nest—A mere hollow scooped in the dry sand.
Eggs—Two or three, varying from white to greenish-buff, spotted with brown and lilac of different shades.