15. CYCLEMYS. 



129 



alveolar surfaces without median ridge ; choancc between the eyes. 

 Upper surface of head covered with undivided skin. Dijj;its webbed 

 or nearly free. Tail short, not longer in tlie young than in the 

 adult. 



East Indies, Southern Cliina. 



This genus stands in the same relation to Nioorla as Emi/s docs to 

 C'lcmmyi: 



Fig. 37. 



Shell of Cydemys amboinensis. 



Si/noj)!<is of the Species. 



I. Plastron not completely closing the skull, emarginate posteriorly ; 

 posterior margin of carapace serrated. 



The suture between the pectoral shield 

 and the marginals longer than that 

 between the abdominal and the mar- 

 ginals ; a large inguinal shield, and 

 six vertebrals 1. plalynota, p. 130. 



