4. Right pectoral limb. External surface. Scale 1/3.7 nat. size.

5. Lungs. Dorsal aspect. About 1/8 nat. size.

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.

Plate 15 SKULLS OF ZIPHIUS CAVIROSTRIS