42 BULLETIN 58, UNITED STATES NATIONAL MUSEUM. 



List of specimens of SakunandnUa keyseiiinciii — Continued. 



n Typical of <S. xchrenckii. 

 Genus ON YCHODACTYLUS" Tsehudi. 



1838. Onychodactylns Tschudi, Classif. Batr., pp. 57, 92 (type, 0. schlegeli). 



1839. Dactylonyv Bibron, in Bonaparte, Icon. Fauna Ital., II, fasc. xxvi, foL 



131**2 (variant). 

 1854. Onychopus Dumeril and Bibron, Erpet. Gen., IX, p. 113 (variant). 



The most remarkable character of this genus is the presence of 

 distinct, compressed, blackish claws, which are even better developed, 

 hooked, and pointed in the larvae than in the adult. Troschel, in a 

 very elaborate paper on this animal, '' made the statement that the 

 claws of the adult animal are confined to the males and that the 

 females do not possess them. This is a mistake, as clearly proven by 

 over forty specimens, sixteen of which are females, all possessing as 

 well-developed claws as the males. Apparently Troschel's specimens 

 were not taken during the breeding season, as shown by his descrip- 

 tion of the vent being a mere slit with swollen lips. It appears then 

 that the males are provided with claws at all seasons of the year, the 

 females only during the breeding time. Only to this extent then is 

 the possession of the claws a sexual character. 



ONYCHODACTYLUS JAPONICUS ( Houttuyn). 

 HAKONE SANSHOUWO. 



Plate V, figs. 1-4; plate VI. 



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

 IX, p. 329, pi. facing p. 336, fig. 3 (type-locality, Japan; Thunberg, 

 collector). — Salamandra japonicus Schneider, Hist. Amph., I, 1799, p. 

 73. — Lqcerta japonica Thunberg, Svensk. Vet. Akad. Nya Handl., 

 VIII, 1787, p. 124, pi. IV, fig. 1 (type-locality, Hakone Mts., "Faconie- 

 berget," Hondo; type in Upsala Acad. Mus. ; Thunberg, collector). — 



oFrom Ovv^, ovvxoz, nail and SaKrvXaz, digit. 6 Arch. Naturg., 1877, I. 



