238 DELPHINID^. 



10. Steno ? coronatns. 



Black ; forehead with two concentric yellow circles. Beak very 

 long. Teeth ^. Dorsal fin very minute. 



Ddphimis coronatus, Freminmlle, Nov. Bull. Soc. Phil. ill. 56, 78. 1. 1. 



f. 2,a, B; Desm. Mamm. 512; Gray, Cat. Cetac. B. M. 132. 

 Delphinorliynchiis coronatus, Zessow, Man. 405; Fischer, Syn. Mamm. 



Inhab. Spitzberjgen ! 



"Beak slender, the upper jaw longest. Black, with two yellow 

 concentric circles on the convexity of the forehead. The upper jaw 

 with 15 teeth on each side, the lower with 24, all very acute. The 

 dorsal fin half-crescent-shaped, nearer the tail than the head. The 

 caudal crescent-shaped. The pectoral of a moderate size. Length 

 36 feet. The skuU not kriowni ' 



" Inhab. Spitzbergen, 18D6, near lat. 74°. Found in numerous 

 troops (FreminviUe). It is singular that no other authors have 

 spoken of it." — Cuvier, Oss. Foss. v. 278. 



"h. Beak scarcely separated from the forehead." 



11. Steno? rostratus. The Beaked Dolphin. 



"Forehead gradually shelving to the beak" {Cuv.). The skull 

 ■with the nose as long as the brain-cavity. Teeth |i-||, rather 

 large. Black, lower lip and body beneath rosy white, not separated 

 by distinct lines, lower part of the sides Hack-spotted. 



DelpHnus rostratus, Cuv. Ann. Mm. xix. 9 ; R. A. i. 289 ; F. Cuv. 



Mamm. Lith. t. ; Cetac. 166. t. 10. f. 2; Sehlegel, Dieren van 



Nederland, 85. t. 11 (not Shaw). 

 Dauphin de Breda, Cuv. Oss. Foss. 278, 296. v. 400. t. 21. f. 7, 8. 

 Delphinus Bredanensis, " Cuv." ; Fischer, Syn. 505, from Cumer, Oss. 



Foss. 

 Delphinus oxyrhynchus, Jardiiw, Nat. Lib. t. 27, cop. from F. Cuv. 

 Delphinus planiceps, Breda, Verh, Nederl. Hist. 1829, 236. t. 1, 2 ; 



Sehlegel, Ahhandl. t. 4. f. 8 (teeth). 

 Steno ? rostratus, Chray, Zool. Frebus Sf Terrm; 43 ; Cat. Cetac. B. M. 



1850, 131 ; Proc. Zool. Soc. 1864, 236. 



Inhab. North Sea. HoUand (Breda). Brest {D' Orbigny). 



" M. Blainville, who observed a skull of this species in the museum 

 of Mr. J. Sowerby, says it had 22 teeth in each jaw, and the sym- 

 physis two-thirds the entire length " (Desm. Diet. H. iff. ix. 160). 

 If this is not a mistake for one-third, it will at once separate it from 

 the other Stenos, and connect it with Pontoporia, but the figure of 

 the skull in Cuvier and Sehlegel resembles that of the genus Steno. 



The skulls named D. rostratus in the Paris Museum are very like 

 the Museum specimens of Steno frontatus. The nose is compressed 

 in front. Teeth |} |} . Length, entire, 21^ inches; nose 121; 

 symphysis of lower jaw 5^ ; width at preorbital notch 4 inches. 



I have not been able to find the skuU of this animal, which was 

 in Mr. Sowerby's Museum in Mead Place, Lambeth. 



