PLATE 24. 
Chelone latiscutata, nat. size. 
Fig. 
1. Upper surface of the carapace. 
si. First neural plate. pl. First costal plate. 
52. Second do. pl2. Second do. 
83. Third do. pla. Third do. 
s4. Fourth do. pla. Fourth do. 
s5. Fifth do. pls. Fifth do. 
s6. Sixth do. ple. Sixth do. 
v2. The impression of the second vertebral scute. 
v3. The impression of the third vertebral scute 
2. Lower surface of the plastron. 
s. Extremity of the entosternal. 
hs. The hyosternal. 
ps. The hyposternal. 
æs. 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. 
4. Upper view of the skull of Chelone convexa, nat. size. The letters and figures 
indicate the same parts as in Plate 17.4. 
