454 DUNN. 



Key to Genera of Larvae. 



Gill rami short or absent. 



Horny claws, dorsal fin present only on tail Onychodactylus 



Horny soles, dorsal fin present on body Batrachuperus 



Gill rami long. 



No claws or soles, dorsal fin present on body Hynobius 



Key to Genera of Adults. 



A. Vomerine teeth in more or less continuous angular series. 



B. Lungs present; no claws or horny soles; vomerine teeth usually in 



V-shaped series; tail never long and cylindrical Hynobius 



BB. Lungs present; horny soles on feet; vomerine teeth in V-shaped 



series; tail flat Pachypalaminus 



BBB. Lungs absent; claws present in some specimens; vomerine teeth in 

 nearly straight line across mouth; tail long and cylindrical. 



Onychodactylus 

 AA. Vomerine teeth in two small widely separated series. 



B. Toes 4; horny soles present : labial folds much developed. 



Batrachuperus 

 BB. Toes 5; no horny soles; labial folds not developed Ranodon 



Genus Hynobius Tschudi. 



1838. Pseudosalamandra Tschudi, Mem. Soc. Sci. Neuchatel, pp. 56, 91 

 type Salamandra naevia Schlegel). 



1838. Hynobius Tschudi, Mem. Soc. Sci. Neuchatel, pp. 60, 94 (type Sala- 



mandra nebulosa Schlegel). 



1839. Molge Bonaparte, Icon. Fauna Ital., 2. fasc. 26 (type Salamandra naevia 



Schlegel), (not Molge Merrem 1820, Syst. Amph., p. 185). 



1848. Hydroscopes Gistel, Xaturg. Thierr., p. XI (substitute for Pseiido- 

 salamandra Tschudi). 



1S54. Ellipsoglossa Dumeril and Bibron, Erpet. Gen., 9, p. 97 (type Sola- 

 tium <lra naevia Schlegel). 



1870. Salamandrella Dybowski, Verh. Zool.-Bot. Ges. Wien, 20, p. 237 (type 

 SalamandreUa keyserlingii Dybowski). 



1870. Isodactylium Strauch, Mem. Acad. Sci. St. Petersbourg, (7), 16, 4, 

 p. 55 (type Isodactylium schrenckii Strauch.). 



(Hynobius is used instead of Pseudosalamandra because Cope (1859), 

 who first combined the two, selected Hynobius). 



Range: From the Urals to Kamchatka, Sakhalin, and Islands of 

 Japan; Formosa; from the River Sosova, Verkoyansk, and Anadyr, 

 to Turkestan and Hupeh. 



