710 
Proceedings of the Royal Society of Edinburgh. [Sess. 
In the more advanced specimen the carpal hones were well ossified, but 
in the other the cartilage was more abundant. The r procarpus had radiale, 
intermedium and ulnare. In the older animal the radiale was 33 mm. in 
transverse diameter, the intermedium 40 mm. and the ulnare 28 mm. The 
radiale articulated with radius, intermedium, carpalia x and 2 . The inter- 
medium was grooved on its palmar surface ; its proximal border mostly 
articulated with radius and only slightly with ulna ; it also articulated with 
radiale, C 2 and C 3+4 ,the latter of which intervened between intermedium 
Fig. 9. — Dorsal surface, left manus, Grampus griseus. 
and ulnare. The ulnare articulated with the inner half of the ulnar 
epiphysis, with C 3+4 , with M IV and My, and with the pisiform cartilage, 
which contained no osseous nodule. 
The distal row had three separate carpalia. Carpale 1 was 25 mm. wide 
and articulated with radiale, C 2 and the epiphysis of Mj. Carpale 2 was 
31 mm. wide and articulated with radiale, intermedium, C 3 , largely with 
M n and slightly with M m . Carpale 3 , 29 mm. wide, was grooved on palmar 
surface, and articulated with intermedium, ulnare, epiphysis of ulna, largely 
