7. HTNOBIUS. 31 



Subfam. B. AMBLYSTOMATIN^J. 



Molgidse, Plethodontidse, part., Gray, Cat. Batr. Grad. 

 Amblystomidse, Ellipsoglossidae, Halloio. Journ. Ac. Philad. (2) iii. 



1858. 

 Amblystominse, Hynobiinsa, Cope, Proc. Ac. Philad. 1859. 

 Amblystomidse, Hynobiidae, Cope, Journ. Ac. Philad. (2) vi. 1866. 

 Salamandrida lechriodonta, part., Strauch, Rev. d. Salam., in Mem. 



Ac. St. Petersb. (7) xvi. no. 4. 



Synopsis of the Genera . 



I. Series of palatine teetb converging backwards, forming a ^*- 



sbaped figure. 



Toes five 7. Hynobius, p. 81. 



Toes four 8. Salamandrella, p. 34. 



II. Series of palatine teetb uninterrupted, doubly arcbed, forming 



a /\/\ -shaped figure. 



Fingers and toes with black claws .... 9. Onychodactylus, p. 35. 



III. Series of palatine teetb in two arcbes convex forwards, sepa- 



rated by a wide interspace. 



Palatine series sbort, between the choanse ; toes five. 



10. Eanidens, p. 36. 



Palatine series short, between the choanae ; toes four. 



11. Batrachyperus, p. 37. 



Palatine series long, converging backwards. 



12. Dicamptodon, p. 38. 



IV. Series of palatine teeth in a nearly straight line or an angle, 

 not separated in the middle by a wide interspace. 



Tongue with radiating plicae 13. Amblystoma, p. 38. 



7. HYNOBIUS. 



Pseudosalamandra, Tschudi, Batr. p. 91. 



Hynobius, Tschudi, I. c. p. 94 ; Gray, Cat. p. 30. 



Molge, Bonap. Faun. Ital. ; Gray, I. c. p. 31. 



Ellipsoglossa, Dum. 8f Bibr. ix. p. 97 ; Strauch, Salam. p. 54. 



Tongue large, elliptical, lateral borders free, anterior border 

 slightly free. Palatine teeth in two long series, converging back- 

 wards, meeting in an acute angle, with two short recurved branches 

 in front, thus forming a ^-shaped figure. Toes five. Tail cylin- 

 drical at the base, compressed at the end. 



Japan. 



Synopsis of the Species. 



Fifth toe well developed ; body elongate, more 

 than four times the length of the head ; 

 tail feebly compressed 1. ncevius, p. 32. 



