EAST COAST OF THE UNITED STATES.

Mesoplodon bidens: Nantucket Island, Massachusetts. 1867. Skull in the Museum of Comparative Zoölogy, Cambridge, Massachusetts. Mesoplodon europæus: Atlantic City, New Jersey. March 28, 1889. Young male. Skeleton, cast, photographs, and viscera in the National Museum. North Long Branch, New Jersey. July 22, 1905. Adult female. Skull in the Museum of Comparative Zoölogy, Cambridge, Massachusetts. Mesoplodon densirostris?: Annisquam, Massachusetts. August, 1898. Young female. Skeleton in the Museum of the Boston Society of Natural History. Ziphius cavirostris: Charleston, South Carolina. 1865 (?). Young female. Skeleton in the National Museum. (Type of Z. semijunctus.) Barnegat City, New Jersey. October 3, 1883. Adult female. Skeleton and cast in the National Museum. St. Simon Island, Georgia. 1893. Male (?). Known from a photograph; only a few bones preserved. Newport, Rhode Island. October, 1901. Adult male. Skeleton and photograph in the National Museum. Hyperoödon ampullatus: New York Bay, New York. 1822. Female (?). Not known to have been preserved. North Dennis, Massachusetts. January, 1869. Male. Skeleton in the Museum of Comparative Zoölogy, Cambridge, Massachusetts. Newport, Rhode Island. 1869. Female. Skull in Museum of the Academy of Natural Sciences, Philadelphia.