_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.