4. Ziphius cavirostris. (Type of Z. grebnitzkii Stejneger). Bering Island.

5. Ziphius cavirostris. Barnegat City, New Jersey.

6. Ziphius cavirostris. Newport, Rhode Island.

7. Berardius bairdii. Centerville, California.

Outer aspect. Nat. size.

Plate 38 TEETH OF ZIPHIUS CAVIROSTRIS

Teeth of Ziphius cavirostris.

Fig. 1. Type of Z. semijunctus (Cope). Charleston, South Carolina. Cat. No. 21112, U.S.N.M. Left tooth. Inner surface.

2. The same. Right tooth. Outer surface.