On two subfossil Whales discovered in Sweden. 



21 



vertebra 13*"; distance between the points of upper branches of lateral 

 processes 17^'; d:o between d:o of lower d:o 22j"; length of corpus 2". 



All the cervical vertebrae have been free. The epiphyses are fixed. 



As, in addition to the first pair of ribs, which has been lost, there 

 have been found 14 pairs in a more or less perfect state, this Whale must 

 have had at least 15 pairs of ribs, and therefore 15 dorsal vertebrae. As 

 the 14 pairs that have been found are consecutive, and the appearance of 

 the 14 th of them seems to indicate that it was the last, we have reason 

 to suppose that it had not more than 15 pairs of ribs, and accordingly not 

 more than 15 dorsal vertebrae. 



The 1 st dorsal vertebra (PI. II. figg. 10 and 11) is as usual charac- 

 terized by its thinner corpus and its lateral processes, which are compressed 

 and largely inclined forward. The upper part of the arcus is lost. Its corpus 

 is destitute of ridge on the lower side, and is in the midst of the epiphysis 

 hollowed out both in front and behind. Looked at from the ends it is of 

 a transversal oval form, with the upper edge almost straight. The foramen 

 spinale is triangular, and its breadth is without question greater than its 

 height. The processus obliqui anteriores are but slightly projecting, and 

 the posteriores scarcely perceptible. The ends of the processus transversi 

 are high, bent downwards, and strongly compressed. On the lower side 

 of the left lateral process is a little articular surface, probably for the se- 

 cond or third ribs tuberculum. On the sides of the corpus, beneath the 

 base of the lateral processes, and nearer the posterior border is a field, 

 separated by a tuberosity projecting in front, partly covered by a harder 

 osseous matter, and concave, which has probably been the point of fixation 

 for the capitulum of the 4 th pair of ribs, which is provided with a very long 

 collum (PI. VI. fig. 50). The epiphyses are firmly fixed to the bone. 

 Dimensions of this vertebra: Breadth of corpus 10"; height of d:o 6-f-"; 

 lenght of d:o on the under side 3^-"; distance between extremities of lateral 

 processes 3 9y"; length of lateral processes 1\' . 



The dorsal vertebra which we consider as the 3 rd (PI. II. figg. 12 

 and 13) has also its lateral processes inclined forwards, but its corpus is 

 much thicker than the preceeding, and the external extremity of the lateral 

 processes is of a different form, broad, not compressed, and provided on 

 the under side with a concave articular surface. The corpus, viewed from 

 either end is of a rounded oval form, with its tranversal dimension greatest, 

 with upper edge concave, and with both the anterior and posterior surfaces 

 plane. On the under side it has a low longitudinal ridge, and is concave 

 on the sides between the edges without any traces of an articulating area. 



