TAB. VI. 



Chelone latiscutata, nat. size. 



Fig. 



1. Upper surface of the carapace. 

 51. First neural plate. 

 Second do. 

 Third do. 

 Fourth do. 

 Fifth do. 

 Sixth do. 



S2. 

 S3. 

 S4. 

 S5. 

 S6. 

 V2. 

 V3. 



pi I. First costal plate. 



J0/2. Second do. 



pis. Third do. 



ph. Fourth do. 



ph. Fifth do. 



pie. Sixth do. 



The impression of the second vertebral scute. 

 The impression of the third vertebral scute. 



2. Lower surface of the plastron. 

 s. Extremity of the entosternal. 

 /is. The hyosternal. 

 ps. The hyposternal. 

 xs. Impressions of the xiphisternals. 



3. Anterior surface of the carapace and plastron, showing the degree of convexity of 

 those parts, and the depth of the osseous case. 

 51 is the scapular arch. 



