[Illustration: Plate 14 SKULLS OF ZIPHIUS CAVIROSTRIS]
_Ziphius cavirostris._
Fig. 1. Skull. (Type of _Ziphius semijunctus_ (Cope).) Charleston, South
Carolina. Female, young. Cat. No. 21975, U.S.N.M. Dorsal aspect. ⅙ nat.
size.
Tip of beak slightly defective.
2. Skull. Barnegat City, New Jersey. Female, adult. Cat. No. 20971,
U.S.N.M. Dorsal aspect. ⅙ nat. size.
[Illustration: Plate 15 SKULLS OF ZIPHIUS CAVIROSTRIS]
_Ziphius cavirostris._
Fig. 1. Skull. Bering Island. (Topotype of _Ziphius grebnitzkii_.) Female
(?), adult, Cat. No. 22069, U.S.N.M. Dorsal aspect. ⅙ nat. size.
2. Skull. Bering Island. (Topotype of _Ziphius grebnitzkii_.) Dorsal
aspect. Cat. No. 21246. ⅙ nat. size.
[Illustration: Plate 16 SKULLS OF ZIPHIUS CAVIROSTRIS]
_Ziphius cavirostris._
Fig. 1. Skull. (Type of _Ziphius grebnitzkii_ Stejneger.) Bering Island.
Male (?). Cat. No. 20993, U.S.N.M. Dorsal aspect. ⅙ nat. size.
2. Skull. (Topotype of _Ziphius grebnitzkii_.) Bering Island. Adult. Cat.
No. 21245, U.S.N.M. Dorsal aspect. ⅙ nat. size.
[Illustration: Plate 17 SKULLS OF ZIPHIUS CAVIROSTRIS]
_Ziphius cavirostris._
Fig. 1. Skull. (Topotype of _Ziphius grebnitzkii_.) Bering Island. Male
(?), adult. Cat. No. 21248, U.S.N.M. Dorsal aspect. ⅙ nat. size.
2. Skull. Newport, Rhode Island. Male, adult. Cat. No. 49599, U.S.N.M.
Dorsal aspect. ⅙ nat. size.
[Illustration: Plate 18 SKULLS OF ZIPHIUS CAVIROSTRIS]
_Ziphius cavirostris._
Fig. 1. Skull. (Type of _Ziphius semijunctus_ (Cope).) Charleston, South
Carolina. Ventral aspect. ⅙ nat. size.