514 DUNN. 



japonicus. In the smallest, No. 32171, the vent is a simple longi- 

 tudinal slit. In No. 32172 the tail is longer than the head and body. 

 The vomerine teeth may be as few as 14 in a series, this being the 

 number in No. 32172. 



The larvae are similar to those of 0. japonicus, even to the extent 

 of having two color phases, with and without a marked dorsal light 

 stripe. All have strong black claws and black horny beaks on the 

 lower jaw. I give the measurements of the four adults and of the 

 largest and smallest larvae. 



32169 adult c? 140.5 15.5 58 67 



Abe (1921) records a female from Hokkanzan, Korea, having claws 

 on fingers, total length 148 mm., head 14, body 51, tail 33. 



The female type in the British Museum has head 14 mm. long and 

 body 66. 



The male type has total length 163, head 12, body 5S, tail 93. 



Apparently these Ussuri specimens have shorter heads than the 

 ones I have seen from Korea. 



Remarks: As has been said under 0. japonicus the two species of 

 this genus are extremely closely related. They are closer in fact than 

 are the Hynobias of the Islands in the Korean straits (tsuensis, tagoi, 

 and ikishimac). 



Nikolski's Onychodactylus rossicus was based on a claw-bearing 

 larva 75 mm. long. 



Besides the following specimens from YYonsan, Boulenger has 

 recorded two from Khabarovka (1886), Nikolski (1896) one from the 

 valley of the Sutchan, and (1913) one from the Ussuri, and Abe (1921) 

 has recorded it from Hokkanzan, Korea. 



Specimens seen: 228, as follows; 

 Korea: Wonsan, 4 adults (Cal. Acad. Sci. 32169-32172). 



224 larvae (Cal. Acad. Sci. 32173, 32175-202, 32204- 

 32209, 32211-32373, 32984-32993, 35977-359SS, Amer. 

 Mus. Nat. Hist. 14503-14506). 



