Plate 40 MESOPLODON EUROPÆUS AND M. STEJNEGERI

Fig. 1. Stomach of Mesoplodon europæus. Atlantic City, New Jersey. Cat. No. 23346, U.S.N.M. Ventral aspect. About ¼ nat. size.

2. The same. Dorsal aspect. About ¼ nat. size.

3. The same. Perineum. a, penis. b, rudimentary mammary slits. c, anus. About ¼ nat. size.

4. Mesoplodon stejnegeri. Yaquina Bay, Oregon. Cat. No. 143132, U.S.N.M. Head, showing teeth in natural position.