THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC. 



205 



and behind is a narrow, and rather irregularly cylindrical prolongation. (See pi 27 

 fig. 6 and text fig. 63.) 



Bambeke figures a quite similar sternum belonging to the skeleton in the 

 Museum at Grand, which he describes as shaped like " a nail, with a conical head " 

 {1, 61). Carte and Macalister's figure of the sternum of the Drogheda, Ireland, 



Fiu. 58. 



Fiu. 59. 



¥10. 60. 



Fn;. 6r. 



Fig. 62. 



Fig. 63. 



Fig. 64. 



Fig. 65. 



Fig. 66. 



BALMNOPTERA ACUTO-ROSTRATA LAC. EUROPEAN AND AJUERICAX. STERNUM. 



Fig. 57. — Norway. Ad. (From Gervais.) Fig. 5S. — Cromer, Eng. Ad. j. (From Flower.) Fig. 59. — 

 Boulogne, France. Ad.? (From Fischer.) Fig. 60. — Norway. Ad. (From photo.) Fig. 61. — Norway? 

 (From Eschricht.) Fig. 62. — Greenland. Im. ? (From Eschricht.) Fig. 63. — Harwichport, Mass. I.m. 

 (From a photo.) Fig. 64. — Belgium. Jr. (From Van Bambeke.) Fig. 65. — Drogheda. Ireland. Jr. 9. 

 (From Carte AND Macalister.) Fig. 66. — Bretagne, France. Jr. (From Gratiolet.) 



specimen (i^, pi. 6, fig. 1) shows it to be elongated heart-shape, with a posterior 

 prolongation. This form is totally unlike that of any other specimen of the species 

 hitherto figured, except the Bretagne specimen cited by Fischer {44, 87, pi. 3, fig. 

 1). In the latter the sternum consists of an oblong ossified central portion sur- 

 rounded by a somewhat cruciform cartilaginous poi'tion. The osseous part bears a 

 resemblance to the sternum of the Drogheda specimen. (See text figs. 57-66.) 



