256 DELPHINIDJE. 



h. Skull. From Haslar Hospital. 

 c. Skull. 



This species, in the slendcriiesa and length of the beak and number 

 of teeth, forms the passage between this and the next section. 



In the Ipswich Museum there is a skull of a species allied to this, 

 if not the same. The beak is twice and a half as long as wide at the 

 notch ; intermaxillaries convex, solid, with an elongate lanceolate 

 space in front ; triangle elongated, about one-third before the end of 

 the tooth-line, rugulose ; lower jaw slender in front, slightly trun- 

 cated ; back of the head convex, rounded ; palate flat, rather concave 

 in the middle of the front part. Teeth |-|. 



in. lin. 



Length, entire 16 



Length of lower jaw 13 3 



Length of beak 9 3 



Width at notch 3 6 



Width at orbits 7 9 



2. Tursio fraenatus. TJie Bridled Dolphin. 



Blackish, paler on the sides, the belly white, end of tail black 

 beneath ; head black ; sides ashy, with a dark band from the angle 

 of the mouth under the eye. 



Delphinus frenatus, F. Cuv. Miimm. Lith. t. ; Cetac. 158. t. 1. from 

 Dussumiers description and draioim/ ; Puchernn, Rev. Sf Mag. Zvol. 

 1856, 449; Gra;/, Cat. Cetac. B. M. 1850, 115. 



Inhab. Cape de Verd. 



Skull in the Paris Museum, from Cape de Verd, sent by Dus- 

 sumier. Length 18 inches, of beak 8-3, width at notch 3-5, of 

 middle of beak 1-11. Teeth ^, rather larger than in D. dubiiis ; 

 palate smooth ; intermaxillaries large, expanded ; nasal convex be- 

 neath ; triangle rather extended in front of the teeth-line, rugose, 

 and rather more so than in D. dubius. Tliere is a second skidl marked 

 D. fre^iatus, No. 2 ; width at notch 3*7 ; teeth |4 or ff ; palate 

 flat ; nasal very convex, especially behind ; triangle extending rather 

 in front of the teeth-line, very rugose ; jaws rather strongly reflexed 

 in front of the notch. 



b. Rostrum of skull rather thick, conical, evenly tapering. 



3. Tursio Metis. The Metis. 

 Skull globular ; back of blower tubercular ; rostrum thick, conical, 

 regularly tapering, upper part convex, longer than the head and more 

 than twice as long as the width at the notch ; intermaxillaries con- 

 vex, more than half the width at the beak. Teeth |^, conical, acute, 

 curved. 



Delphinus Metis, Gray, Cat. Osteal. B. M. 36 ; Zool. Urebus f^- Terror, 

 .".8. t. 18 (skull); Cat. Cetac. B. M. 1850, 113. 



Inhab. ? 



