260 



THE WHAXEBONE WHAXES OF THE WESTERN NORTH ATLANTIC. 



the suprascapular bordei", but distally becomes nearly straight. The suprascapular 

 border is regularly convex; the coracoid, or anterior, border, is short and nearly 

 straight, but presents near the juncture with the suprascapular border a tubercle 

 which causes a convexity in the outline. The acromion is large, and directed out- 

 ward or downward. The shape of the anterior and posterior borders is very char- 

 acteristic of the species. Among American specimens this peculiar form is found 

 well developed in the type of B. cisarctica Cope, at Philadelphia, in the Amagansett 

 (N. Y.) skeleton in the National Museum (No. 23077), in the Charleston skeleton, 

 in the skeleton in the Field Columbian Museum, Chicago ; and less well defined in 

 the Long Id. (N. Y.) skeleton in the American Museum of Natural History. 

 Holder's figure of the scapula of this skeleton is taken at an angle and does not, 

 therefore, show the true shape. (See text figs. 88 to 93 ; also pi. 45, figs. 2-5.) 



The following ai'e actual measurements of the greatest breadth and height of 

 the scapula in various American and European specimens : 



BAL^NA GLACIALIS BOXXATEERE. EUEOPEAN AXD AMERICAX. SCAPULA. 



A scapula from a partial skeleton found at Beaufort, North Carolina, has, accord- 

 ing to Ml'. R. L. Garner, a breadth of 51 inches. The Raleigh Museum skeleton, 

 which is as large as the Christiania skeleton No. 2, is, unfortunately, without the 

 scapulae. Cope recorded in 1868 that there was in the museum of Rutgers College, 

 New Brunswick, N. J., a scapula 48^ in. broad and 36 in. high. He estimated that 

 this indicated an individual 57 feet long, but in view of the dimensions given in 

 the foregoing table this appears improbable.^ 



PHALANGES. 



Gasco gives (47, 40) the following formula for the Taranto skeleton, I, ? ; U, 

 4 ; HI, 5 ; IV, 3 ; V, 3. Professor Rios y Rial also gives a formula for the Guetaria 

 skeleton, but it appears to be entii-ely hypothetical. 



' See table on p. 255. ' Type of B. cisarctica. 



' See Proc. Acad. Nat. Sci.Phila., 1868, p. 194, where a few other remarks regarding the pres- 

 ent species are made. 



