695 
1908-9.] The Skeleton of a Sowerby’s Whale. 
size of a small pea, situated in its mid-part, represented the pisiform. In 
the interval between the proximal and distal rows a bone on the palmar 
surface of each manus articulated with the radiale, intermedium, C Y 
and a part of the adjoining bone which represented C 2 . It was 13 mm. in 
transverse and 12 mm. in antero-posterior diameter, and was from its 
position the os centrale (C, fig. 1), but it was not visible on the dorsal aspect. 
The carpus of the right manus contained also a second os centrale, 8 mm. 
in transverse and 9 mm. in antero-posterior diameter, which articulated with 
Fig. 2. — Eight manus, dorsal surface, Sowerby’s Whale, St Andrews. 
the angles of the intermedium, ulnare, C 3 and C 4 , and was more visible 
on the dorsal aspect (fig. 2). In its constitution the carpus closely corre- 
sponded with that of the 1885 specimen previously described, with the 
addition in the right manus of a second os centrale. 
The carpus of the Mesoplodon from Dalgety Bay differed in the following 
points from those above described: — No os centrale existed as a separate 
bone, but the angle of the right radiale, which projected towards the bone 
designated C 2 + C 3 , was partially separated by a constriction which might 
indicate an os centrale fused with the radiale. The transverse diameter 
of the distal carpalia was as follows: C 1? 22 mm.; C 2 + 3 , 36 mm.; whilst 
the internal carpale was only 25 mm., considerably less therefore than in 
