173 

 SOO. The thirteenth neural plate of the carapace of the same Ckelone. 



v ol The fourteenth neural plate, which may also be regarded as a median marginal 

 plate. <>f the same Ckelone \ it is called the ' pygal ' plate. 



-i ' -' The ccntnun of the first dorsal vertebra of the same Ckelone. 



M)3. The neurapophyscs of the first dorsal vertebra of the same Ckelone. 



804. The centrum of the second dorsal vertebra of the same CkeUme. 



805. The centrum of the third dorsal vertebra of the same Ckelone. 

 S06. The centrum of the fourth dorsal vertebra of the same Ckelone. 



807. The centrum of the fifth dorsal vertebra of the same Ckelone. 



808. The centrum of the sixth dorsal vertebra of the same Ckelone. 

 800. The centrum of the seventh dorsal vertebra of the same Ckelone. 



810. The centrum of the eighth dorsal vertebra of the same Ckelone. 



811. The centrum of the ninth dorsal vertebra of the same Ckelone. 



M 2. The neurapophyses of the ninth dorsal vertebra of the same Ckelone . they have 

 imperfect articular surfaces looking outwards on the posterior eygapophyses. 



813. The centrum of the tenth dorsal vertebra of the same Ckelone. 



814. The neurapophyses of the tenth dorsal vertebra of the same Ckelone . they bear 



anteriorly small tygapophyses looking inwards, and well-developed ones look- 

 ing outwards posteriorly. 



815. The centrum of the first sacral vertebra of the same Ckelone. 



816. The ncurapophyses of the first sacral vertebra of the same Ckelone. 



