705 
1908-9.] The Skeleton of a Sowerby’s Whale. 
to the base of My. No ossihc nodule had been formed in it. The carpus 
did not contain an os centrale. 
In digit I, the pollex, the metacarpal was elongated and somewhat 
conical ; it articulated directly with the radiale, for carpale x was not 
developed, and also with carpale 2 + 3 ; the phalanx was not ossified. In the 
other digits the metacarpals were flattened. Metacarpain articulated for 
more than a third with radiale and the rest with carpale 2 + 3 ; it had nine 
osseous phalanges. Metacarpalni articulated almost equally with car- 
palia 2 + 3 and C 4 ; it had seven osseous phalanges. Metacarpaliy articulated 
with carpale 4 and with the cartilage between it and the ulnare ; it had three 
osseous phalanges. Metacarpaly was marked by a groove on the dorsal 
surface which passed obliquely between the two lateral borders ; the bone 
projected at the ulnar border of the manus, and was set at an angle to 
M IV ; it articulated with ulnare and M IV and it joined the pisiform cartilage ; 
two rudimentary osseous phalanges were embedded in cartilage. 
Max Weber gave figures of the manus in two specimens of Lagenorhynchus 
alhirostris. In the older the three bones of the procarpus were represented, 
whilst only two disto-carpalia were figured, which he interpreted as C 2 +C 3 
and C 4 , giving a significance like that which I have also attached to them. 
His conception of the metacarpus and phalanx of digit V corresponded with 
the conclusion to which I have subsequently arrived. From the figure of the 
carpus in the younger specimen it would seem that he recognised in it three 
distinct disto-carpalia, whilst a fourth was to be found in a bone occupying 
the position of the ulnare : the ulnare proper had either disappeared or 
become blended with the intermedium. 
I suggest the following formula for L. alhirostris : — 
Min. Ann. Med. hid. Pollex. 
Pli 2 Ph 3 Ph 7 Ph 9 Ph 
My Mjy Mm Mu Mi 
Ulna Radius 
Phocgena communis (Delphinus phocoena). 
The manus of the common porpoise was dissected in an adult female in 
December 1892, and has also been examined in other specimens. 
In the adult the radial and ulnar carpal epiphyses were united with the 
vol. xxix. 45 
