40 



twice and nearly a half as long as the width at the notch ; 

 the triangular impression just to the line of the hindermost 

 teeth; teeth ^^, slender, subcylindrical, acute, about five 

 in an inch ; palate nearly flat ; lower jaw rather produced 

 and rounded in front. 



Tnhab. W. Africa, Capt. W. T. W. Owen, R. N. Mus. 

 I'll i led Service In.st. 



This species is very like D. Euphrosyne, but is rather 

 smaller and the beak rather shorter : it may prove only a 

 variety. 



The Euphrosyne. Delphinus Euphrosyne. 

 Tab. 22. Skull. 



Skull round, rather flattened behind ; nose rather broad 

 and rather tapering in front, depressed, flat at the base, 

 shelving on the sides and rounded in the middle above, 

 about half as long again as the head, or \ the entire 

 length, and 24: times the length of the width at the notch ; 

 teeth ~J, slender, elongate, slightly curved, acute. 



Inhab. ? Skull, Mus. Norwich. 



Skull, length, entire, 



„ of head, 



„ of nose, 



„ of lower jaw, 



„ of temple, 



Width of notch, 



„ at middle of beak, 

 „ at temples, 



intermaxillaries are convex and rounded above, 

 wide groove between them for half their length in 



18-6 

 7-4 

 11-3 

 160 

 96 

 4-6 

 2-4 

 8-3 



inches & lines. 



The 

 with a 

 front. 



Var. Rather smaller. Skull in British Museum only 

 differs from the one at Norwich in being rather smaller in 

 all its dimensions. This and the former species are very 

 like D. Metis, but are rather broader and rather more 

 depressed ; the intermaxillaries are rather more convex, 

 especially behind, and form a regular defined front edge to 

 the triangle, which is rough in front, and marked with ob- 

 lique, cross grooves, while in D. Metis, the triangle is 

 furnished with an acute, raised margin on each side in 

 front. 



Skull in Mus. Col. Surgeons (Delphinus Delphis, Cat. 

 Mus. Col. Surg. 161, n. 1117), with the palate convex, not 

 grooved on the side ; intermaxillary and vomer forming 

 part of the palate ; teeth ^. 



Skull, Length, entire, 160 inches. 



„ of nose, 10 



„ of lower jaw, .... 133 



Width at notch, 3'6 : obtained from 



the Leverian Museum in 1806. May be another variety. 



Dau])hin a petit pectoral, Voy. Pole Snd, t.1\, f. 2, t. 

 23,y; 7, 8, not described. 



Skull in Mus. Paris. Palate flat, rather convex behind ; 

 triangle extended rather in front of the teeth line. 



Teeth J-| ; nose narrowed in front, \ the length and 

 2f times the length of the breadth at the notch ; lower jaw 

 slender in front ; nasal rather high and convex. Is this a 

 Steno \ 



D. dubius, Cuv. R. A. i. 288. F. Cuv. Mam. Lith. t. 

 Cetac. 154. Ann. Mus. xix. 14. 



Nose depressed, like T>. Delphis, but rather shorter ; the 

 teeth small and .sharp, \y, thin, pointed. 

 Inhab. Coast of France. 



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



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



Skull, length IS'S, of beak 100, width at notch 2-9, at 

 middle of beak 17; 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 100, of teeth line 8-6, width 

 at notch 3'8, at middle of beak \'7^ ; teeth ^-J or ^ %, small, 

 hooked ; palate flat, rather convex ; beak tapering in fi'ont, 

 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." Mits. Paris. 



Skull, from the Cape de Verds, length 16"0, of beak 9*4, 

 of teeth line 7'6, width at notch 3'7|^, at middle of beak 

 r4; teeth ^T-li j 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 ; inter- 

 maxillaries convex behind, nose tapering in front. 



This last is perhaps D. frontalis, Dussum. Cuv. R. A. i. 

 288. 



" Black, belly white, with a lead-coloured band from 

 angle of mouth to pectoral. 



Inhab. Cape Verd." 



** Skull roundish ; triangle just to the tooth-line ; pa- 

 late icith a deep groove on each side, and a high, central 

 ridge behind. 



t Beak moderate, Ig- the length of the brain-cavity. 



The Dolphin. Delphinus Delphis. 

 Tab. 26. Foetus and tongue. 



D. vulgaris, Lacep. 



D. antiquorum, Kay, Will. Pise. 28, t. A \,f. 1. 



Delphinus Delphis, Linn. F. Cuv. Cetac. 123. 



Cuvier, Mam. Lithog. t. Schlegel, Abh. i. 20, t. 4, 

 /. 2, teeth. Cuvier, Oss. Foss. v. /. 21,/. 9, 10. 



Black, sides gray, beneath white ; the dorsal moderate ; 

 teeth 1^4, (4-f , Schlegel) ; nose of skull half as long again 

 as the length of the brain cavity. 



Inhab. North Sea. Atlantic Ocean. 



