238 THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC, 
The proportion for the Tay River whale is from Struthers’s figure (89, fig. 6). 
His measurements give only 32.7% The cause of this discrepancy is not obvious. 
All the other specimens show a close agreement. 
The correspondence in the bones of the forearm between the types of MZ. 
osphyta and IM. bellicosa are seen on comparing plate 34, fig. 4, and plate 36, fig. 3. 
The proportion of the length of the radius and ulna to the length of the skull 
in various American and European specimens is shown in the following table : 
MEGAPTERA NODOSA (BONNATERRE). EUROPEAN AND AMERICAN. RADIUS AND ULNA. 
Length of Radius. Length of Ulna. 
Length of 
Locality. Skull. 
With Without With Without 
Epiphyses.| Epiphyses.| Epiphyses.| Epiphyses, 
inches. | percent. | per cent. | per cent, | per cent. 
WViogelsand> German yiecrjeee oe) trier aisle tr) 148.2 AR Seer eke earene 
Avene IRNTete SKEOIEN NG -o50. 000 oenadg ose ROOD Gar 125.0 28.8 26.0 24.0 22.0 
PONCE ONAN, MASS. oc ooqcos enon oan d0u0ab FCoE gI.0 20.7 28.8 25.5 24.7 
GaperC@ odmiMassmremrertactr initiate ntti titer 113.0 28.8 26.1 24.4 22.7 
GoastrofeMalne tine. sisi aoere aes eer eternal 135.0 25.6 24.3 noegais 21.1 
Wik IDVCKES! oe pos ooacopacoonconce sono GEROdOE 114.5 5506 25.8 21.9 21.0 
Greenland (umd) Mius;) ce aerate «esis iret sie ete 121.2 ies: 25.2 21.4 
PHALANGES, 
The number of ossified phalanges (exclusive of metacarpals) in the European 
Humpback has been given by Struthers (87, 38), and of the Greenland Humpback 
by Eschricht (37), Van Beneden (8, 134), and others, as follows : 
MEGAPTERA NODOSA (BONNATERRE), EUROPEAN AND AMERICAN. PHALANGES. 
Locality. Author. I, Il. III. IV. Vv. 
Vogelsand, Germany....... Rudolphi 2 8 6 aie 
Tay River, Scotland....... Struthers 2 7 6 3 
Greenland rience Van Beneden and Gervais 2 7 Ui 2 
Greenlande. cect eile eiesies Eschricht 2 7 7 a 
*From Rudolphi’s figure—Type of JZ. longimana. 
* Type of AZ. osphyia. * Type of A. bellicosa. 
‘In d’Alton’s Die Skelete der Cetaceen, 1827, pl. 3, fig. e, the hand of a Humpback whale, which 
from the text appears to be the type of B. /ongimana, is represented with the following phalangeal 
formula: 2, 7, 6, 2. 
®* According to my own notes on this skeleton, there are 6 phalanges in the 4th digit. 
°TIn a foetus 45” long. Eschricht’s figure of a foetus 35” long, from Greenland, appears to show 
the following ossified phalanges: 2, 8, 8, 3 (37, 79). Eschricht also gives the formula for the 
adult as 3, 9, 9, 3, but does not state from what specimen or specimens this was derived (37, 141). 
It appears to include the metacarpals. 
— 
