506 DUNN. 



Genus Onychodactylus Tschudi. 



1838. Onychodactylus Tschudi, Mem. Soc. Sci. Neuchatel, pp. 57, 92 (type 



Onychodactylus schlegeli Tschudi). 



1839. Dactylonyx Bibron, in Bonaparte, Icon. Fauna Ital., 2, fasc. 26, (sub- 



stitute for Onychodactylus Tschudi). 

 1854. Onychopus Dumeril and Bibron, Erpet. Gen., 9, p. 113 (substitute for 



Onychodactylus Tschudi). 

 1886. Geomolge Boulenger, Proc. Zool. Soc. London, p. 416 (type Geomolge 



fischeri Boulenger) . 



Range: From Khabarovka, Maritime Gov., to Wonsan, Korea. 

 Hondo and Shikoku. 



Diagnosis: Hynobiidae with claws in larvae and in some adults; 

 no lungs; premaxillary fontanelle large; gills of larvae without fila- 

 ment bearers; vomerine teeth in a nearly transverse and continuous 

 series; tail long and nearly cylindrical ; two species. 



Onychodactylus japonicus (Houttuyn). 



1782. Salamandra japonica Houttuyn, Verh. Genootsch. Wetensh. Vlissingen, 

 9, p. 329, pi. facing p. 336, f . 3. 



1787. Lacerta japonica Thunberg, Svensk. Vet. Akad. Nya Handl., 8, pi. 124, 

 pi. 4, f. 1 ("Fakoneberget"). 



1839. Onychodactylus japonicus Bonaparte, Icon. Fauna Ital., 2, fsc. 26; Gray 

 1850, Cat. Batr. Grad. Brit. Mus., p. 33, pi. 3, f. 15; Troschel 

 1877, Arch. Naturg., 1, p. 199, pi. 15 (elaborate descriptions of 

 adult and larva); Hilgendorf 1880, Sitz. Ber. Naturf. Berlin, p. 

 121; Boulenger, 1882, Cat, Batr. Grad. Brit, Mus., (2), p. 35; 

 Cope 1889, Bull. U. S. Nat. Mus. 34, pi. 46, f. 6 (carpus and tarsus); 

 Okada 1891, Cat. Vert. Japan, p. 65; Tago 1903, Tokyo Zool. 

 Mag., 15, p. 464; 1904, Tokyo Zool. Mag. 16, p. 43; Stejneger, 

 1907, Bull. U. S. Nat. Mus. 53, p. 42, pi. 5, f. 1-4, pi. 6; Tago, 1907, 

 Tokyo Zool. Mag., 19, p. 238 (habits); Okajima, 1908, Zeitschr. 

 Wiss. Zool. 91, p. 351 (osteology); 1909, Zeitschr. Wiss. Zool. 94, 

 p. 171 (sense organs); 1909, Anat. Anz., 34, p. 182 (hyobranchial 

 apparatus); Dunn, 1918, Bull. Mus. Comp. Zool., 52, p. 454; 

 Okajima and Tsusaki 1921, Zeit. Anat. Entw. 60 (scleral carti- 

 lages); Okajima 1922, Fol. Anat, Japon., 1, p. 196 (hyobranchial 

 apparatus). 



1798. Lacerta thunbergii Donndorf, Zool. Beytr., 3, p. 132 (based on Thunberg 

 1787). 



