22 



W. LlLLJEBORG, 



The processus- spin osus is tolerably high and directed backward. The pro- 

 cessus obliqui anteriores et posteriores are plainly visible, and outside the 

 former are tolerably high projecting processus mammillares (A. Retzius). 

 The foramen spinale is subtriangular, and the transversal dimension consi- 

 derably greater than the height. The lateral processes are short and thick, 

 and the epiphyses are firmly attached to the corpus. Dimensions of this 

 vertebra: Breadth of corpus 8-§-"; height of d:o 6y"; length of d:o 5"; di- 

 stance between extremities of lateral processes 17-f-"; height of the vertebra 

 to the top of processus spinosus 16}"; breadth of ends of lateral proces- 

 ses 4:j. 



The dorsal vertebrae which we take to be the 5 th , 6 th and 7 th were 

 found lying together with the ends of their corpora in their natural position. 

 The 5 th and 7 th agree accurately with the 6 th as here represented, (PI. II. 

 figg. 14 and 15), and they differ from the third by their larger size, lon- 

 ger projecting neuralspine, and longer and broader lateral processes, which 

 in all point backward. 



The 5 th differs from the other two in having its lateral processes 

 shorter and less inclined backward , in being broader over the processus 

 mammillares, and in having a broader foramen spinale. The 7 th differs from 

 the 6 th only in having slightly longer lateral processes, and a narrower fora- 

 men spinale. The epiphyses are loose on all three. They are also loose 

 on the succeeding dorsal vertebrae and on the two first lumbar vertebrae. 

 We may therefore, according to Flower, consider this skeleton as that of 

 a whale in the 2 nd or "adolescent" period of life. 



Til 6 th dorsal vertebra (PI. II. figg. 14 and 15), which we shall 

 describe separately, has a corpus, when viewed endwise, rounded oval, 

 with the transverse dimension greatest, and the upper edge slightly concave. 

 Its sides, as well as the upper surface, are concave and smooth between 

 the edges, and its under side strongly convex longitudinally in the middle, 

 but not ridged. The foramen spinale is almost halfround, with the trans- 

 versal dimension greater than the height. The processus mammillares are 

 compressed, oblong, strongly projecting, and, as well as the processus obli- 

 qui anteriores, completely separated from the base of the lateral processes, 

 but united with the base of the arcus. The processus spinosus (neuralspine) 

 is high, much inclined backwards, cut off obliquely at the point, with roun- 

 ded corners, and with the front sharp edge concave, when viewed from 

 the side, and with the point something broader. The lateral processes are 

 flattened with somewhat thicker points, and there on the under side and 

 nearer the posterior angle, provided with a concave articulating cavity for 

 the costa. Viewed from above these processes are considerably broader at 



