PSEUDORCA CRASSIDENS. 



213 



can hardly be said to be placed on the side of the scapula, as it forms, on the contrary, a narrow 

 surface slightly excavated, and turned in a forward direction.^ The pointed pectoral fin itself, 



in its outline, more resembles the same member of the ca'ing-whales, and partly that of Grampus 

 griseus, than that of the Orcas ; but still it essentially differs from the pectoral fins of the 

 former by its inconsiderable length, and its much smaller size, generally speaking. In the carpus 

 there are five bones, two of which are placed beneath the ulnar bone, two under the radius, 

 and the fifth again under the latter two between the radius and the first phalanges of the second 

 and third finger. Some of these bones may sometimes be ankylosed in old individuals ; such 

 at least, is the case in the Asnæs dolphin, with the two placed beneath the ulnar bone. In the 

 male from Middelfart, the fingers were mutilated and incomplete, in both pectoral fins; in 

 the Refsnæs dolphin there are two phalanges in the thumb, seven in the second finger, six 

 in the third, three in the fourth, and two in the fifth finger, including the five metacarpal 

 bones. 



Very different is the structure of the manus of the Globiocephali. In the skeleton of a 

 very large and old ca'ing-whale from the Faroe Islands, I find four phalanges in the thuml) 

 (though only in the right one, the left has but three), fourteen in the second, ten in the third, 

 three in the fourth, and two in the fifth finger. Thus, the two fingers on which the length of 

 the manus depends have almost twice as many phalanges in the ca'ing-whale as in the dolphin 



Cuvier says very little about the scapula of his Delphinus griseus ; a comparison between tins 

 and the scapula of the species here described, must, therefore, be founded essentially on his very 

 small figure (' Eecherches sur les Oss. Foss.,' 4th ed., pi. 224, fig. 15) ; but it is doubtful whether 

 such a comparison can be made with profit, especially as we ar« not quite sure, whether some 

 mistake has not occurred relative to this figure. It is, at least, a suspicious circumstance, that this 

 scapula, which is that of an animal that can not have been more than three and a half metres long, is 

 in the figure considerably larger than the scapula of the much greater ca'ing-whale (fig. 16 of the same 

 plate), though both are said to be represented at one eighth of their natural size. I have, therefore, 

 not thought it right to found any comparison on this figure. 



