124 Proceedings of the Biological Society of Washington. 



from the Turkestan boundary. Thus, in spite of its name, it seems to 

 belong rather to the Turanian than to the Siberian fauna. 



The possibility that this species may be discovered further east is not to 

 be denied, and no far-reaching conclusions should be drawn from its 

 apparent absence in Eastern Asia. The fact that an Onychodactylus has 

 recently been discovered on the mainland and an Hynobius in Turkestan 

 as well as the finding of Ranodon olympicus in our own hemisphere ought 

 to be warning enough. 



As this genus has now obtained a place in the North American fauna, 

 it is desirable to place on record its nomenclatorial status as well as that 

 of its two species. 



Ranodon Kessler. 



1866. — Ranodon Kessler, Bull. Soc. Natural. Moscou, vol. 39, p. 180 

 (monotype, R. sibiricuf). 



1882. — Ranidens Boulenger, Cat. Batr. Grad. Brit. Mus. , p. 36 (emen- 

 dation). 



1. Ranodon sibiricus Kessler. 



1866. — Ranodon (Triton) sibiricus Kessler, Bull. Soc. Natural. Moscou, 

 vol. 39, pt. 1, p. 130, pi. 7 (type-locality, Semipalatinsk, western 

 Siberia). 



1868. — Ranodon kessleri Ballion, Bull. Soc. Natural. Moscou, vol. 41, 

 pt. 1, p. 138 (type-locality, Kopal, Turkestan). 



2. Ranodon olympicus Gaige. 



1917. — Ranodon olympicus Gaige, Occ. Pap. Mus. Zool. Univ. Michigan, 

 No. 40, May 30, 1917, p. 2, pi. 1 (type-locality, Lake Cushman, 

 Olympic Mts., Washington). . — Leonhard Stejneger. 



