450 



fore part of the diapophysis of the third dorsal, increases in length in the fourth dorsal, 

 and is gradually transferred in the sixth and seventh dorsals to the outer side of the prozyga- 

 pophyses : in the following vertebrae it seems to take their place, and to occasion a reversing 

 of the usual relative position of the zygapophysis ; for whereas in the cervical and anterior 

 dorsal vertebrae the anterior zygapophyses are overlapped, as in other mammals, by the 

 posterior zygapophyses, in the succeeding dorsals, beginning with the seventh, the posterior 

 zygapophyses seem to be overlapped and concealed by the anterior zygapophysis ; but the 

 appearance is due to the place of the prozygapophyses being taken by the metapophyses. 

 These latter processes, in fact, continue after the articular surface has ceased to be developed, 

 and after the entire disappearance of the posterior zygapophyses, to project forwards from the 

 thirteenth dorsal to the sixth lumbar vertebra inclusive ; beyond which the neural arch is 

 devoid of all exogenous processes, save the spine, until the middle caudal vertebrae, where 

 rudiments of the metapophyses again reappear. 



The radius and ulna are partially anchylosed with the short and thick humerus. The 

 carpus consists of seven ossicles : the first on the radial side answers to the scaphoid and 

 trapezium : the second is wedged into a distal cleft between the radius and ulna, and cor- 

 responds with the lunare in the Chelonian carpus and that of the Orang : the third is very 

 small, and represents the cuneiforme : the pisiforme is separated from it by the junction of 

 the cuboid with the ulna : the cuboid supports the rudiment of the fifth digit and part of that 

 of the fourth : the magnum supports part of the fourth finger and a great part of the third : 

 the trapezoides is moved to the interspace between the third and second digits, but principally 

 supports the latter. The first digit, like the fifth, is represented only by a rudimental meta- 

 carpal bone. The larger metacarpal of the second digit supports seven phalanges ; that of 

 the third supports five phalanges and the terminal one seems to be lost ; the metacarpal of 

 the fourth here supports only one phalanx : all these, in the entire animal, are enveloped in 

 a common fold of integument. The increase of the phalanges of certain digits beyond the 

 number three is a remarkable instance of departure from the mammalian type and of affinity 

 with the extinct enaliosauria and fishes. The four anterior ribs have a head and neck : the 

 rest are suspended by the part answering to the tubercle to the ends of the transverse pro- 

 cesses. The costal cartilages are partially ossified : the first four pairs articulate with the 

 sternum : the original separations of the parts of that bone have disappeared. The first 

 piece or manubrium has an anterior median notch and two broad lateral processes. 



The ' Small Bottle-nose Whale ' of Hunter, figured in the ' Philosophical Transactions ' for 

 1787, pi. xviii., which was sent to him from Berkeley, Gloucestershire, by Dr. (then Mr.) 

 Jenner, measured eleven feet long, and had 46 teeth in the upper and 50 teeth in the lower 

 jaw. Cuvier assigns to the Delphinus tursio from 42 to 46 teeth in each jaw, so that the 

 teeth seem to vary from 40 to 50 in each jaw. 



The animal from which the present skeleton was obtained was taken by some fishermen 

 with nets in shoal water, in company with a male, in a small bay below the Nore, June 1828. 

 It survived many hours after having been dragged out of the water ; during which time it 

 emitted a sound not unlike the bellowing of a calf. The body was obtained, and presented to 

 the Museum by 



John Howship, Esq. 



