On two subfossil Whales discovered in Sweden. 



23 



the points, with the fore edge a little but the back edge much bent back- 

 ward, and somewhat concave at the terminal border. Their posterior edge 

 is hollowed out at the base. Dimensions of this vertebra: Breadth of cor- 

 pus 9j"; height of d:o 7"; length of d:o G{"; height of the vertebra to the 

 point of the processus spinosus 18j-"; distance between extremities of late- 

 ral processes 2'. 4"; length of the one lateral process at the anterior edge 

 if-"; and of the other 10"; length of the processus spinosus on the anterior 

 edge 8~"; distance between the external edges of the processus mammil- 

 larcs 7j". 



The dorsal vertebra, which we consider as the 9 th , 10 th or 11 th , 

 differs from the 7 th in that its corpus is longer and higher, its foramen 

 spinale smaller, its lateral processes longer and more inclined backwards, 

 its processus spinosus longer, and the distance between the external edges 

 of the processus mammillares less. Compared with that which Ave take to 

 be the 13 th (PI. III. figg. 16 and 17), it differs in having the lateral pro- 

 cesses shorter and broader and with larger and deeper articular cavities at 

 the point, the processus spinosus shorter, the foramen spinale broader, and 

 the distance between the outer edges of the processus mammillares greater. 

 These differences are then of the same kind as those that distinguish the 

 7 th from it, and are conformable with the continuous change in the verte- 

 brae throughout the whole dorsal region. 



The dorsal vertebra which we take to be the 13 th (PI. III. figg. 16 

 and 17) is distinguished from those already described by the length of the 

 lateral processes and processus spinosus, as also by the formers more slen- 

 der form and inconsiderable articular-cavity at the end (fig. 17 a). The 

 foramen spinale is also smaller than in the foregoing and its height and 

 breadtli about equal, and its form triangular, and the distance between the 

 outer edges of the processus mammillares less. Viewed endways, the corpus 

 is more rounded than in the preceeding. but the width is nevertheless con- 

 siderably greater than the height, and the upper edge is slightly concave. 

 On the lower side along the middle it is much convex, but without ridge, 

 and the sides between the edges are concave. The processus obliqui ante- 

 riores and mammillares are long, and project from the anterior edge of the 

 arcus. The processus spinosus, which is much inclined backward, and 

 truncated at the point, has the anterior sharp border, viewed from the side, 

 somewhat concave, its extremity being broader. The lateral processes are 

 also much inclined backward, and have both the anterior and posterior edges, 

 with the exception of the latters base, sharp, but a little within the middle 

 of the former is a projecting rough protuberance. On this vertebra, as 



