1908-9.] 
709 
The Skeleton of a Sowerby’s Whale. 
with M m and Miv. No carpale 5 was present, and both M IV and Mv articu- 
lated with the ulnare and the latter also with the ulna. An os centrale 
occupied the position described above in my specimen. 
Kukenthal had the opportunity of studying several embryos of G. melas. 
He recognised only three separate distal carpalia. Carpale 3 in the larger 
embryos was the biggest and had a short metacarpah ; carpale 2 was 
associated with Mn and M in , though principally with Mu; carpale 3 with 
Mm and Miv; whilst carpale 5 was directly fused with the ulnare with 
which M v articulated. He referred to an os centrale described by me as 
present in the well-grown G. melas, but in the majority of the hands of 
his embryos the centrale was not visible. He stated that the foetal carpus 
corresponded in the number and position of its elements with that of the 
well-grown animal. The pisiform cartilage was well formed in the embryos, 
and in all a small, rounded piece of cartilage projecting from the radial 
border of the radiale represented the prgepollex of von Bardeleben. 
As is well known, G. melas is distinguished by the number of the 
phalanges in the second and third digits and by the great length of the digits, 
the index beino; the longest. 
The formulse of the carpus in my specimen are appended, and that in the 
right hand corresponds with formula No. 2 in Kukenthal’s memoir, p. 34. 
Right Rand. 
Ma 
pis. 
cart. 
Ann. 
Med. 
Index. 
Pli 2 
Ph 8 
Ph i2 
Mm 
Mm 
Mn 
/ \ 
/ \ 
/ x 
/ c 3 
C 
2 
Cen. 
Ph 2 
| 
Mi 
A 
ulnare intermedium radiale 
Ulna Radius 
Left Hand. 
Min. Ann. Med. Index. Pollex. 
Ph Ph Ph Ph Pli 
My Miv Mm Mu Mi 
ulnare intermedium radiale 
Ulna Radius 
Grampus griseijs ( Risso’s Dolphin). 
In September 1899 a school of Risso’s dolphin was captured near 
Hillswick, Shetland, and specimens were sent to me by Dr Charles Anderson.* 
I dissected the hands in two animals. From the state of the ossification 
neither had reached maturity, though one was more advanced than the 
other : the radio-ulnar epiphyses were ossified, though not fused with the 
shafts. 
* See my account in Proc. Roy. Phys. Soc. Edin., vol. xi. p. 192, 1891-92 ; also my 
description of the Viscera in Journ. Anat. and Pliys., vol. xxvi. p. 258, 1892. Two of the 
skeletons are mounted in the Anatomical Museum of the University. 
