33S 



MK. W. H. FLOWEE OX THE OSTEOLOGY OE THE SPEEM- WHALE. 



almost confluent with the bulky, rounded metapophyses. After this the transverse process 

 gradually resolves itself more distinctly into the ascending and forward-directed rounded 

 nietapophysis, and the slightly descendhig and backward-directed diapophysis. The 

 latter rapidly diminish in bulk, the last (tenth, fig. 7) being a comparatively slender 

 conical process which, on the right side, meets within a line's breadth an ascending 

 tubercle of the inferior transverse process to be presently described ; on the left side 

 the end of the process appears to be broken oiF. On the eleventh dorsal vertebra there 



Pig. 8. 



Eleventh dorsal vertebra and right rib. 



is no trace of diapophysis, except perhaps a slight thickening on the corresponding part 

 of the right neurapophysis. The free extremities of all these transverse processes (except 

 the tenth) present roughened articular facets for the tubercles of the corresponding ribs. 

 In the first this facet has, a compressed oval figure, with the long diameter vertical; 

 in the second it is subcircular ; in the thud, fourth, and fifth triangular ; in the 

 remainder o^al, with the long diameter antero-posterior. 



On the upper pait of the sides of the bodies are conspicuous articular facets for the 

 reception of the heads of the ribs. These deserve particular attention for the pecu- 

 liarities they present in the hinder part of the region. They are disposed as follows : — 

 The first vertebra has one facet on its hinder edge for articulation with the second rib. 

 It is in the form of a low rough tuberosity. The second vertebra has a cup-shaped 

 depression, with elevated margins on its hinder edge, for the third rib. The third 

 vertebra has a similar facet for the fourth rib. The fourth vertebra receives in the 

 same manner the fifth rib. The fifth vertebra shows on its anterior edge an indication 

 of an articular surfiice for the hinder part of the fifth rib, and a large facet on its 

 hinder edge for the sixth rib. The sixth vertebra has a more strongly marked 

 articular facet on the anterior edge, while that on its hinder edge (for the seventh rib) 

 is of reduced dimensions. In the seventh vertebra the articular surface near its front 



