ON BELMULLET WHALING STATION. 185 
although its presence in the flippers of very small fcetuses obtained from 
another source has been confirmed. The scheme for the arm and wrist 
bones agrees with that given by Kiikenthal,*? thus :— 
R U 
/ r Ase y u 
was PLR GF 
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Paden! | 
4 _ 
my My M4 Ms 
The formula for the number of phalanges, supposing the third 
finger to be missing, may be arranged thus :— 
Tee dl. 1 EV Oe. V,, 4 
L. Problematical Organs.—In the one large foetus (9 feet 3 inches) 
which I*was ‘enabled to examine for these organs they were found to be 
in a state similar to that in the adult. 
2. Balenoptera sibbaldu (Gray). 
The only foetus examined of this species was a young female about 
8 feet long. The mother was No. 38, Table III. The only points of 
Fra. 5. eae Surface of Beak of B. sibbaldii (Foetus), No. 3, showing hairs. 
(Approx. 35). 
Teach noted in this specimen were the condition of the Organs of 
Jacobson, and the distribution of hairs on the upper part of the snout. 
‘7 Kikenthal, op. cié., vol. ii., p. 285. 
