139 



2. Rhinoclemmys Fitz. Nasus protractus. 

 T. verrucosa Walb. Am. m. 2. 



8. Geoemys Gray. (Eiriys, part. Dum. Clemmys, part. Fitz.) 

 Sternum metathoraci per sympliysin affixum, inarticulatum : 

 digiti fissi: ungues anteriorum pedum quinque, posterio- 

 rum quatuor: cauda gracilis. Emys Spengleri Schweigg. 

 Afr, 1. 



9. Tetraonyx Less. Sternum metathoraci per sympliysin af- 



fixum, inarticulatum: digiti palmati: ungues undique qua- 

 tuor: cauda gracilis. Tetraonyx longicoUis Less. (Emys 

 Batagur Hardw.) As. or. 2. 



10. Flatysternon Gray. Sternum metathoraci per symphysin 

 affixum, inarticulatum, latissimum: scutis sterno-costalibus 

 tribus: digiti palmati: ungues anteriorum pedum quinque, 

 posteriorum quatuor: cauda grandis et longa. 



Platysternon megacephalum Gray. As or. 1. 



§§ Gula cum papillis. 



11. Chelydra Schweigg. (Chelonura Flem. Rapara Gray. 

 Saurochelys Latr. Emysaurus Dum.) Sternum metatho- 

 raci per synchondrosin . affixum ope scutorum abdomina- 

 lium, inarticulatum, angustum: scutis sterno-costalibus tri- 

 bus, uno tantum interposito: scutella marginalia viginti 

 quinque: scuta sterni duodecim: cauda grandis et longa, 

 cristata. 



/T. serpentina Linn. Am. s. 1. 



12. Staurotypus Wagl. (Sternotherus, part. Bell.) Sternum 

 metathoraci per symphysin ope scutorum pectoralium ab- 

 dominaliumque affixum, angustum, anticearticulatum: scu- 

 tis sterno-costalibus duobus contiguis interpositis: scutella 

 marginalia viginti tria: scuta sterni octo: cauda brevis. 



Terrapene triporcata, Wiegm. Am. s. 1. 



13. Kinostermnn JSob. (Cinosternum et Staurotypus, part. 



Dum.) Sternum metathoraci per symphysin ope scuti 

 abdominalis afüxum, articulatum; scutis sterno-costalibus 

 duobus contiguis interpositis: scutella marginalia viginti 

 tria: scuta sterni undecim: cauda brevissima. 



