324 



strongly serrated in very young specimens (fig. 124 a); six or 

 seven (8) neural plates, separated by the costals in adult 



Fig. 124. Carcttochclys 'uisciilpta Ramsay. 

 a. New-born specimen of 55 mm. 

 h. Specimen of 94 mm. Margin still serrated. 



specimens; nuchal large; 21 marginals, the pygo-marginal being 

 single. Plastron solid, formed of nine shields. All the plates 



