THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC. 



259 



The Cape Lookout (N. C.) skeleton, the Cape Cod (Mass.) skeleton in the 

 Museum of Comparative Zoology, and that in the Field Columbian Museum, have 

 sterna closely resembling that of the Taranto skeleton (pi. 46, figs. 3 and 4), or 

 rudely heart-shaped, but the skeleton in the American Museum, New York, has the 

 sternum quite different from any of the foregoing (text fig. 87), being cruciform, 

 like the sterna of some specimens of Bahenoptera phijsalus L. One might almost 

 believe that it did not belong to the skeleton to which it is attached. 



Considering the diversity of form in the sternum of the Finbacks, we need not 

 be surprised at the lack of conformity among the various specimens of the Nord- 

 caper. The sternum in these animals is of little service in discriminating closely 

 allied species. 



In the Taranto (Italy) skeleton the sternum is 18 cm. high, 21 cm. wide ; in 

 Guldberg's Iceland skeleton. No. 1, 46 cm. high, 37.5 cm. wide ; in the Cape Look- 

 out (N. C.) skeleton at Raleigh, 30 cm. high, 38 cm. wide. 



SCAPULA. 



The scapula of the Nordcaper has a peculiar and characteristic shape, which is 

 quite well shown in Gasco's figure of the Taranto whale (47, pi. G, fig. 8). The 

 glenoid, or posterior border, is evenly concave from the glenoid fossa half-way to 



Fig. 88. 



Fig. 89. 



Fig. go. 



Fig. gi. 



Fig. 92. 



Fig. 93. 



SAL^NA GLACIAUS BONNATERRE. AMERICAN AND EUROPEAN. SCAPULA. 

 Fig 88 -Long Id. New York. (Amer. Mus. Nat. Hist.) (From a photo.) Fig. 8g.-Z),/fo. (Field 

 CoLUMB.MusO FIG. 90.-/)///.. (U. S. NAT. MUS.) FIG. gr.-CHARLESTON S. C. (From A PHOTO.) F.G.gc. 

 TVPEOF^ c/^^i^cr/c. (Oblique VIEW, FROM A PHOTO.) Fig. 93.-TARANTO, Italy. (From Gasco.) 



