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.

[Illustration: Plate 25 SKELETON OF ZIPHIUS CAVIROSTRIS]

_Ziphius cavirostris_ (Type of _Z. semijunctus_ (Cope).)

Fig. 1. Atlas. Anterior surface. Defective on left side.