218 



1122. The vertebra dentata of the same Penguin. 



The hypapophysis is developed to the same extent as the neural spine : the anterior zygapo- 

 physes are very small ; the posterior ones are large and support metapophyses. 



Hunter ian. 



1123. A middle cervical vertebra of the same Penguin. 



The anterior articular surface of the centrum is convex vertically, concave transversely, and 

 the reverse at the opposite end. There is no neural spine. Diapophyses project from the 

 outside of the anterior zygapophyses, and the posterior ones support metapophyses ; the 

 anchylosed pleurapophyses complete the large apertures for the vertebral artery and sympa- 

 thetic nerve, and the double hypapophyses form the canal for the carotids. 



Hunterian. 



1124. The first dorsal vertebra of the same Penguin. 



The articular surfaces of the centrum resemble those in the neck : the diapophyses are 

 more developed ; the neural spine is strong and quadrate ; the metapophyses are suppressed ; 

 the hypapophyses have the form of a pair of broad diverging plates. 



Hunterian. 



1125. The third dorsal vertebra of the same Penguin. 



In this the anterior surface of the centrum is simply convex, the posterior one concave. 

 The diverging hypapophyses are supported on a compressed vertical plate. 



Hunterian. 



1126. The fourth dorsal vertebra of the same Penguin. 



This differs from the preceding in the reduction of the hypapophysial plates in size. 



Hunterian. 



1127. The sixth dorsal vertebra of the same Penguin. 



In this the hypapophysis is reduced to a simple compressed plate. 



Hunterian. 



1 128. The eighth caudal vertebra of the same Penguin. 



The first five of these have thick bifurcate spines ; the last five have bifurcate hypapo- 

 physes. 



Hunterian. 



1 129. The right scapula of the same Penguin. 



Its articular surfaces for both the coracoid and humerus are convex. 



Hunterian. 



