PROFESSOR FLOWER ON RISSO’S DOLPHIN. 11 
is a small additional phalanx to the pollex, and one is also present in all the specimens 
of Globicephalus which I have examined. 
As the bones of the digits have never been separated, there can be no doubt as to their 
correct number and position. The second digit is the largest, and has ten distinct 
ossifications including the metacarpal, the last being a rounded nodule rather smaller 
thanapea. ‘The third has eight ossifications; its metacarpal is considerably longer than 
that of the second digit; and its proximal phalanges are rather broader, though more 
flattened and more compressed, especially at their posterior or ulnar edge, than are those 
of the second digit. ‘The relative condition of the bones of these two digits thus agrees 
rather with Gervais’s figure of the limb of G. griseus (fig. 11) than of G. rissoanus 
(fig. 6). The fourth digit is very short, and has but three ossifications ; and the fifth is 
rudimentary, being mostly cartilaginous, with a nodular metacarpal bone at the base. 
The minute bone-specks represented in the terminal portion of the cartilages of these 
last two digits in Gervais’s figure of G. griseus are not present. 
The principal dimensions of the bones of the pectoral limb are as follows :— 
inches, 
meepula — SMe NG Gy i: wwe ool ol cs ae es SO 
LE AGEYSI I) glee Re aeiaes Sir Meare i arm ee ae Ls 1) 
Menerivor xeromion 00.) go as wae) ot, 8 eeD 
Greatest depth ofacromion. . . . . .. 1:9 
Length of coracoid process. . . . . . . 25 
Length from head of humerus to tip of second finger'. . 22°5 
CUM UUBEEHS | ey) se eRe we ee 
Beceibyorraamzcnume,. Wi. %. Sptiny (Ot ait Sw SERA eo) 
LES IE ELCCENT: SCS ea er Sa a a a ea I 
Breadth of radius at distal extremity . . . . . . . 24 
Breadth of ulna at distal extremity. . . . . . . . 1:9 
About a month after the capture of this Dolphin (viz. March 31st) Mr. Gerrard 
gave me an opportunity of examining another specimen which he had bought at 
Billingsgate Market; but, as it had changed hands several times, he was unfortunately 
not able to obtain any trustworthy account of the place of its capture, though this 
was probably somewhere in the Channel. It was quite fresh at the time of my 
seeing it. This was also a female, but, as the condition of the bones afterwards 
showed, a very young animal. 
Although very different from the former in the disposition of the surface colours, the 
other characters, especially those of the skeleton and dentition, are so closely similar 
that I have little doubt of its specific identity; and such being the case, it is within 
the bounds of probability that this might have been the identical young animal which 
* Owing to the drying and contraction of the cartilages, this must be somewhat less than in life. 
c2 
