Plate 24 MANDIBLES AND VERTEBRÆ OF ZIPHIUS CAVIROSTRIS

Mandibles and vertebræ of Ziphius cavirostris.

Fig. 1. (Type of Z. semijunctus (Cope).) Charleston, South Carolina. Cat. No. 21975, U.S.N.M. ⅕ nat. size.

2. (Type of Z. grebnitzkii Stejneger.) Bering Island. Cat. No. 20993, U.S.N.M. About ⅕ nat. size.

3. Barnegat, New Jersey. About ⅕ nat. size.

4. Vertebræ. (Type of Z. semijunctus (Cope).) From right to left, as follows: 1-3 cervicals, 1st thoracic, 7th thoracic, 8th thoracic, 1st lumbar, 1st caudal. About ¼ nat. size.