۲ 
i| 
il f 
M M 
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1 
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۳ 
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H 
| f 
u 
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| 
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il | 
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۱ Pare ۰ | 
| Chelone breviceps, four fifths of the natural size. | 
| Fig. | 
| 1. Upper view of the carapace. | 
| | 
| 2. Under view of the plastron and bent-down skull. [ 
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