BEAKED WHALES, FAMILY ZIPHIID^ TKUE. 89 



Plate 38. 



Teeth of Ziphius cavirostris. 



Fig. 1. Type of Z. semijunclus (Cope). Charleston, South Carolina. Cat. No. 21112, U.S.N.M. 

 Left tooth. Inner surface. 

 2. The same. Right tooth. Outer surface. 

 3-4. Barnegat City, New Jersey. The two large teeth. 



5. The same. One of the rudimentary teeth. 



6. Topotype of Z. grehnitzkii. Cat. No. 22069, U.S.N.M. Bering Island. Left tooth. Outer 



surface. 



7. The same. Right tooth. Inner surface. 



8. Type of Z. grebnitzkn Stejneger. ('at. No. 20993, U.S.N.M. Bering Island. Left tooth. 



Inner surface. 



9. The same. Right tooth. Outer surface. 



10. Newport, Rhode Island. Cat. No. 49599, U.S.N.M. Left tooth. Inner surface. 



11. The same. Right tooth. Outer surface. 



Plate 39. 

 Teeth of Berardius bairdii. 



Fig. 1. Bering Island. Young. Cat. No. 142118, U.S.N.M. Left anterior tooth. Inner surface. 



2. The same. Left po.sterior tooth. Inner surface. 



3. St. George Island, Alaska. Male, immature. Cat. No. 49727, U.S.N.M. Right anterior tooth. 



Inner surface. 



4. The same. Left anterior tooth. Outer surface. 



5. Centerville, California. Male, adult. Cat. No. 4972.5, U.S.N.M. Left anterior tooth. Inner 



surface. 



6. The same. Right posterior tooth. Outer surface. 



7. St. George Island, Alaska. Female, adult. Cat. No. 49726. Left anterior tooth. Inner 



surface . 



8. The same. Right posterior tooth. Outer surface. 



9. The same. Left posterior tooth. Inner surface. 

 All figures natural size. 



Plate 40. 



Fig. 1. Stomach of Mesoplodon europseus. Atlantic City, New Jersey. Cat. No. 23346, U.S.N.M. 

 Ventral aspect. About \ nat. size. 



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



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



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



teeth in natural position. 



Plate 41. 



Fig. 1. Mesoplodon euro pieus. Atlantic City, New Jersey. Male, young. Cat. No. 23346, U.S.N.M. 

 Length 12i feet. 



2. The same. Dorsal aspect. 



3. Ziphius cavirostris (?). Kiska Harbor, Alaska, 1904. 



4. Ziphius cavirostris. Newport, Rhode Island. Male, adult. Length 20 feet 1 inch. Cat. No. 



49599, U.S.N.M. 



Plate 42. 



Fig. 1. Berardius bairdii. St. George Island, Alaska. Female, adult. Length 40 feet 2 inches. Cat. 

 No. 49726, U.S.N.M. 

 Ventral aspect. 

 2, 3. Berardius bairdii. Centerville, California. Male (?), adult, (.'at. No. 49725, U.S.N.M. 

 Length about 41 feet. Head from in front and from below. 

 4. The same. Skeleton. About f nat. size. 



The pectoral fin is modeled from another specimen. It is on the wrong side in this figure. 



O 



