DELPniNIDiE. PONTOPORIA. 159 



Delphinus pseudodelphis. 



Schreb., Siiugth. vii. pi. 358 (skull). 



STENO. 



T ^h:-£i^=92tol00. 



The Large-toothed Dolphin. Steno frontatus. 



Gray, Zool. Erebus and Tenor, tab. 43 (skull) ; Cat. Mannn. Brit. Mus. 

 pt. i. Cetacea, pi. 7. fig. 4 (skull). 



a. Part of the upper jaw : teeth large. 



b. Bones of the ear. India. Presented by General Hardwicke. 



c. Skull. India. 



d. e. Skulls. 



/. Skull. From Mr. Argent's Collection. 



The Compressed-beaked Dolphin. Steno compressus. 

 Gray, Zool. Erebus and Terror, tab. 27 (skull). 



a. Skull. The specimen figured in the < Voyage of the Erebus and 



Terror.' 



b. e, e. Skulls. 



d. Skull. South Sea. Antarctic Expedition. Presented by the 

 Lords of the Admiralty. 



The Sharp-beaked Dolphin. Steno attenuatus. 



Gray, Zool. Erebus and Ten-or, p. 43. tab. 28 (skull). 



a. Skull. India ? Presented by Mrs. Ince. 



6. Skull. The specimen figured in the ' Voyage of the Erebus and 

 Terror.' 



c. Skull. 9° N. Lat. Presented by A. Pearson, Esq. 



Steno tucuxi. 



a, b. Skulls. Male and female. Amazon River. Collected by Mr. 

 Bates. — The original specimens described by Dr. Gray. 



Steno hamatus. 



Delphinus hamatus, Schreb., Saugtk. vii. pi. 369 (skull). 



PONTOPORIA. 



The Pontoporia. Pontoporia blainvillii. 



Gran, Zool : Erebus and Ten-or, tab. 29 (skull) ; Cat. Mamm. Brit. 



Mus. pt. i. Cetacea, pi. 7. fig. 4 (skull). 

 Delphinus (Stenodelphis) blainvillii, Gervais vt D'Orbionv Vov 



Amer. Mend. Mamm. tab. 23 (skull). 



