K>s - FITZINGER, SYSTEMATISCHE ANORDNUNG DER SCHILDRRÖTEN. 



Scutclla marginalia viginti quatuor; nuchali distincto . 1. Sect. Cinothorax. 

 Scutclla marginalia viginti tria ; nuchali nullo . . 2. Sect. C i n i x y s s. s t r. 



Mctathorax solidus. Scutellum nuchale nulluni . . .11. Gen. Geochelone. 



Scuta stcrni undccim; gulari unico, connato, scutcllo in- 

 tcrgulari nullo. Margo thoracis lateralis arcuatus . . . 1. Sect. Cylindr aspi s. 



Scuta sterni duodccim; gularibus duobus, scutello intcr- 

 gulari nullo. Margo thoracis lateralis arcuatus . . .2. Sect. Chelonoidhs. 



Scuta sterni duodccim; gularibus duobus, scutello inter- 

 gulari nullo. Margo thoracis lateralis angulatus . . .3. Sect. Geochelone s. str. 



Metathorax solidus. Scutellum nuchale distinetum . . 111. Gen. Testudo. 



Sternum solidum. Scuta sterni undeeim; gulari unico, con- 

 nato , scutello intergulari nullo. Scutclla marginalia viginti 

 quatuor; caudali unico , integro 1. Sect. Chersina. 



Sternum solidum. Scuta sterni duodeeim ; gularibus duo- 

 bus , scutello intergulari nullo. Scutclla marginalia viginti 

 sex ; caudali unico , integro 2. Sect. C h e r s o b i u s. 



Sternum solidum. Scuta sterni duodeeim ; gularibus duo- 

 bus , scutello intergulari nullo. Scutclla marginalia viginti 

 quatuor ; caudali unico , integro 3. Sect. P s a m m o b a t e s. 



Sternum solidum. Scuta sterni duodeeim; gularibus duo- 

 bus, scutcllo intergulari nullo. Scutclla marginalia viginti 

 quatuor; caudali unico, partito 4. Sect. Testudo s. str. 



Sternum valvatum ; lobo postico, inter scuta abdominalia 

 et femoralia articulato , mobili. Scuta sterni duodccim ; gula- 

 ribus duobus , scutello intergulari nullo. Scutclla marginalia 

 viginti quatuor; caudali unico , integro . . . . .5. Sect. Chcrsus. 



Sternum valvatum; lobo antico, inter scuta pectoralia 

 et humeralia articulato, mobili. Scuta sterni duodeeim; gula- 

 ribus duobus , scutello intergulari nullo. Scutclla marginalia 

 viginti quatuor; caudali unico , integro . . . . .6. Sect. Pyxis. 



IL Fa miliar Steganopoda. 



I. Tribus: Rostrata. 



Collum retractile. Sternum ligamentis metathoraci adnexum. 



Pelvis mobilis /. Gen. Emys. 



Sternum scutis abdominalibus metathoraci adnexum . 1. Sect. Pyxidemys. 

 Sternum scutis pectoralibus abdominalibusque metatho- 

 raci adnexum 2. Sect. Emys s. str. 



Collum retractile. Sternum per symphysin metathoraci af- 



iixuui. Pelvis mobilis 11. Gen. Clemmys. 



Sternum dilatatum , solidum. Nasus prominulus . . 1. Sect. Clemmys s. str. 

 Sternum dilatatum, solidum. Nasus protractus . . 2. Sect. Rhinocl c mmys. 

 Sternum dilatatum, valvatum; lobo antico, inter scuta 

 abdominalia et pectoralia articulato, mobili. Nasus protractus ? 3. Sect. P e 1 u s i o s. 



Sternum dilatatum, valvatum; lobo antico et postico, in- 

 ter scuta abdominalia et pectoralia, nee non inter abdominalia 

 et femoralia articulato, mobili. Nasus protractus . . .4. Sect. C inos ternon. 



