130 



MEMOIRS OF THE CARNEGIE MUSEUM 



The first neural is represented by the posterior end only, the second to the 

 sixth inclusive are complete, the seventh and eight are onh^ partially preserved. 

 In general the neurals are hexagonal with their broadest ends forward. The an- 

 terior ends of the second to the fifth are concave. There is no indication of a 

 carina on any of the neurals. Their principal dimensions are given in the table 

 below: 



Length. Width. 



40 45 



45 42 



48 35 



47 41 



32 44 



24 44e 



29 — 



No. 

 2 



3. 

 4. 

 5. 

 6. 



7. 



Fig. 12. Echmatemys douglassi. Plastron of type, C. M. No. 3244. One-fourth natural size. 



There are as usual eight costals. These vary but little in the width of their 

 proximal and distal ends. The fifth on the right side has a length of 144 mm.; 

 the first at the suture with the second a length of 123 mm. 



