37 



143. An anterior caudal vertebra of a Parrot-fish (Scartu). 



The trniiiiud conn, of which the posterior is the deepest, are ouified to their centre : they 

 are united by firm bony matter, presenting reticuUtr or fibrous aspect in the depressions at 

 UM mint and under part of the centrum. The neurapophyses are auchylosed to their mi- 

 tniiii and to their spine ; and the parapophyses, which have aUo united with the centrum, 

 are bent down and have coalesced at their extremities to form the haemal canal. 



1 14. A vertical longitudinal section of a dorsal vertebra of a large Parrot-fish (Scariu). 



The parapophysis (marked />) if long, strong, and twisted : the neural spine is very lung 

 and slender. The osseous texture is not lamellated, but is coarsely and irregularly reticulate. 



J/tutteria*. 



145. A vertical longitudinal section of a caudal vertebra, with the confluent haem- 



apophyscs and haemal spine, of a large Parrot-fish (Scariu). Hunterian. 



146. A horizontal longitudinal section of a caudal vertebra of a large Parrot-fish 



(Scant). Hunti-riaii. 



OrderlV. ANACANTHINI. 



Family Gadida. 



147. The skeleton of a Cod-fish (Gadtu morrkua). Number of abdominal vertebrae, 



18; of caudal vertebra?, 34: total, 52. 



This may be regarded as a typical form of the malacopterygian skeleton, although all the 

 (iadida resemble the Aamthopteri, and differ from the Malacojitm in the absence of the 

 ' duct us poeumaticus.' All the rays of all the fins are flexible and jointed. The abdominal 

 rertebne are characterised by the great sue and length of the parapophyses, and by the small 

 sise of the pleurapophyses which are appended to their extremities. 



Pwcktued. 



148. The disarticulated skull of a Cod-fish (Gaebu morrAna), with the branchial 



rota. 



The bones of the endo skeleton are numbered in accordance with Table I. The four ver- 

 tical segments in which they are arranged are distinguished by the colours of the tickets bear- 



