38 8ALAMANDRIDJE. 



12. DICAMPTODON. 



Dicamptodon, Strauch, Salam. p. 68. 



Tongue nearly entirely adherent. Palatine teeth in two long 

 transverse arched series, convex forwards, converging backwards, 

 situated behind the line of the choanae, separated from each other 

 by a wide interspace. Toes five. Tail compressed. 



California. 



1. Dicamptodon ensatus. 



Triton ensatus, Eschscholtz, Zool. Atlas, p. 6, pi. 22. 

 Dicamptodon ensatus, Strauch, I. c. p. 69. 



Head broad ; snout rounded. Body stout. Limbs short ; toes 

 free. Tail sword-shaped, curved upwards, as long as head and 

 body. Skin nearly smooth ; parotoids and costal grooves apparently 

 absent. Reddish-brown, back marbled with brown. Total length 

 about 4 decimetres. 



California. 



13. AMBLYSTOMA * 



Amblystoma, Tschudi, Batr. p. 92 ; Baird, Journ. Ac. PJiilad. (2) i. 

 1850, p. 281 ; Gray, Cat. p. 34 ; Bum. Sf Bibr. ix. p. 101 ; Cope, 

 Proc. Ac. Philad. 1867, p. 166 ; Strauch, Salam. p. 60. 



Xiphonura, Tschudi, I. c. p. 95 ; Or ay, I. c. ; Dum. § Bibr. p. 161. 



Salamandroides, Fitzing. Syst. Rept. p. 33. 



Heterotriton, Gray, I. c. p. 33. 



Desmiostoma, Sager, Penins. Journ. Medic. 1858, p. 428. 



Camarataxis, Cope, Proc. Ac. Philad. 1859, p. 122. 



Pectoglossa, Mivart, Proc. Zool. Soc. 1867, p. 698. 



Larval Forms : — 



Siredon, Wagl. Syst. Amph. p. 209 ; Dum. fy Bibr. p. 176. 

 Axolotes, Owen, Ann. fy Mag. N. H. xiv. p. 23. 



Tongue subcircular or oval, with radiating plicae ; lateral borders 

 free ; anterior border slightly free. Palatine teeth in long series, 

 continuous or separated by slight interspaces. Toes five. Tail 

 more or less compressed. 



North America, southward to Mexico ; one species from Siam, 

 probably at a great altitude. 



* The three following species are referred, for completeness' sake, to this 



genus, but not without uncertainty, as nothing precise is said in the description 



of the arrangement of the palatine teeth or of the attachment of the tongue : — 



Salamandra brevicauda, Wied, Nova Acta Leop.-Carol. xxxii. p. 127. — 



Pennsylvania. 

 & maculata, id. ibid. p. 129. — Pennsylvania. 

 S. melanoleuca, id. ibid. p. 130. — Pennsylvania. 



