SCANDINAVIAN CETACEA. 231 



tebræ, and 28 caudal, altogether, with the 7 cervical, 64 vertebrae. Processus spinosi inferiøres 

 22, the last two of which were rudimentary. The sternum consisted of three bones, all separate ; 

 5 pairs of the ribs were costæ veræ, and besides these the 6th and 7th pairs seem to have been 

 united to a cartilaginous extension of the sternum. 



This dolphin is sometimes found off our coasts, as has been mentioned in the description, and 

 oftener than D. delpJds. Our museums bear evidence that it has been caught on our coasts at 

 least four times. It has also at times appeared near the coasts of Denmark, England, Holland, 

 and Erance, where it sometimes runs up the mouths of rivers. A skull of a D. tursio, caught 

 in the Baltic at Gede, is figured in Missus 2dus ' Historiæ Piscium,' tab. 1, fig. 1, by Klein, and 

 is mentioned in the text at page 23, under the name of Orca. 



Note. — Delphinus Euphrosyne and obscurus, Gray, are mentioned in ' Skandinavisk Fauna,' as 

 being Scandinavian with a ?, from the fact that skulls of these species from unknown localities are 

 preserved in the Museum in Lund, but they probably do not belong to the Scandinavian Fauna. The 

 latter inhabits, according to Gray, the Southern Pacific Ocean, and the locality of the former is, 

 according to the same author, still unknown.^ 



2nd Genus ORCA, Gray. 



Nose blunt, more or less rounded, without a conspicuous transverse groove above. Blowers 

 resembling those of the preceding genus. The back with a fin more or less high, sometimes on 

 the middle and sometimes somewhat behind the middle of the body. Eorm of body generally 

 more robust and thick than in the preceding genus, more especially the fore part. Both jaws 

 with a smaller number of teeth on each side (in ours 12 — -14, or less, and in the foreign species 

 seldom more). Teeth of a conical form, generally obtuse, and as age advances sometimes more 

 or less deciduous. 



Nose on the skull broad and obtuse, about equal in length with the hinder part of the skull ; 

 width at the base greater than half its length. The symphysis of the lower jaw-bones is 

 shorter than half the length of these bones. The skeleton is generally of a heavier build, and 

 has commonly a smaller number of vertebrae than in the preceding genus. 



The species of this genus are not numerous (11 — 12), but are scattered in every ocean ; and 

 the distinctions between them are at times so insignificant, that the specific differences have been 

 considered doubtful. We have at least three species, if not more, within the boundaries of the 

 Scandinavian Fauna. 



^ [The same author has recently (" On the Cetacea, which have been observed in tlie Seas 

 surrounding the British Islands," ' Proceed, of the Zoolog. Society,' 1864) stated that D. Euphrosyne 

 is synonymous with Eschricht's Delph. Holbollii, and that it appears in the North Sea and near the 

 coasts of England. It may also belong to our Fauna. — »1835.] 



