3. DELPHINUS. 253 



blackish. Beak of skull more than half as long again as the brain- 

 cavity. Teeth g^. 



Delpliinus fulvifaseiatus, Pucheran, Vou. Dumont cT Urvil/e, Mamm. 

 t. 21. f. 1, t. 28. f. 1, 2 (skull). 



Inhab. Van Diemen's Land. 



18. Delphinus dubius. 



Beak of skull depressed, like D. DeJphis, but rather shorter ; the 

 teeth small and sharp, |-|, thin, pointed. 



Delphinus dubius, Ciiv. R. A. i. 288; F. Cuv. Mamm. Lith. t. ; 

 Cetac. 154 ; Ann. Mus. xix. 14 ; Grmj, Cat. Cetac. B. M. 1850, 110. 



I found three skulls under this name in the Paris Museum. 



1. "D. dubius, Cuv. n. 10." (Mus. Paris.) 



Skull: length (in inches and lines) 15-3, of beak 10-0, width at 

 notch 2-9, at middle of beak 1-7 ; teeth ^ or \^ ; palate flat, rather 

 convex ; lower jaw flat, obliquely in front and keeled in front beneath. 



2. "D. dubius, Cuv. n. 2." (Mus. Paris.) 



Skull : length 16-6, of beak lOU, of teeth-line 8-6, width at notch 

 3-8, at middle of beak l-7g ; teeth |^ or '^^ , small, hooked ; palate 

 flat, rather convex ; beak tapering in front, reflexed before the notch ; 

 intermaxillaries rather convex ; triangle extending rather in front 

 of the teeth-line, rugose in front. 



3. "D. dubius, Cuv. n. 7." (Mus. Paris.) 



Skull, from the Cape de Verd : length 16-0, of beak 9-4, of teeth- 

 line 7-6, width at notch 3-7|, at middle of beak 1-4 ; teeth |-^-f| ; 

 triangle scarcely extended in front of the teeth-line ; palate flat ; 

 lower jaw oblique, compressed and flat on the sides, rather turned up 

 at the tip ; intermaxillaries convex behind ; nose tapering in front. 



This last is perhaps B. frontalis (Dussum. Cuv. E. A. i. 288 ; 

 Pucheran, Rev. & Mag. Zool. 1856, 449). 



*' Black, belly white, with a lead-coloured band from angle of 

 mouth to pectoral. 



" Inhab. Cape Verd." 



M. Pucheran observes, from the examination of the bones, that 

 he believes that D. frontalis differs more from D. dubius than from 

 D. frcenatus. In the skulls of all the three specimens the palate is 

 flat ; but in D. frontalis the beak is longer than in D. dubius, and the 

 anterior groove of the intermaxillaries is more open and more pro- 

 minent. The skidl of D. frcenatus resembles that of J), dubius in 

 the length of the beak. (See Z. c. pp. 459, 4G0.) 



Delphinus duhius. — This skull differs from that of D. Delphis, as 

 Cuvier has obsex'ved, by the appearaiicc of the vomer in a longitu- 

 dinal space on the palate between the maxillaries and premaxillarics. 

 The palatal prominence formed by the palatine bone is broader and 

 shorter, and the grooves on each side are shallower and much 



