The Beaked Whales of the Family Ziphiidae / An Account of the Beaked Whales of the Family Ziphiidae in the Collection of the United States Museum...

by Frederick W. True

Fig. 1. Mesoplodon stejnegeri. Type-skull. Immature. Cat. No. 21112, U.S.N.M. Ventral aspect. ¼ nat. size.

Edges abraded; tip of beak, pterygoids, zygomatic processes, etc., defective.

2. Mesoplodon stejnegeri. Skull. Adult. Cat. No. 143132, U.S.N.M. Ventral aspect. About ¼ nat. size.

Pterygoids and left malar defective.

Plate 7 SKULLS OF MESOPLODON

Fig. 1. Mesoplodon bidens. Skull. Nantucket, Massachusetts. Female, adult. Mus. Comp. Zoöl. No. 1727. Lateral aspect. ¼ nat. size.

Tip of beak, left pterygoid and malar defective.

2. Mesoplodon densirostris? Skull. Annisquam, Massachusetts. Female, young. Boston Soc. Nat. Hist. Lateral aspect. ¼ nat. size.

Distal portion of beak defective and warped.