IIVNOBIIDAE. 



495 



Of nineteen males one has 12, one 12-13, fifteen have 13, one 13-14, 

 and one 14 costal grooves. In nine the appressed toes are separated 

 by 2, and in ten by 3 costal folds. 



Of twenty females all have 13 costal grooves. In six the appressed 

 toes are separated by 3, and in fourteen by 4 costal folds. 



In ten young specimens the number of costal grooves is L3. The 

 appressed toes meet in two, and are separated by one costal fold in 

 two, by two in three, and by three in three. 



This indicates a greater relative leg length in the young and in the 

 males. 



The fifth toe is lacking in No. 26205, lacking on the righl side in 

 26161, rudimentary in 26207 and 26212, and rudimentary on side in 

 26156, 26157, 26186 and 26201. This is from a series of 179 in the 

 Cal. Acad. Sci. all with the same data as the type. 



The length of the vomerine series is quite constant. The distance 

 between the inner branches is rather variable, a- is tin- meeting pos- 

 teriorly of the two series. 



Remarks: The species from Iki-shima is closest to the Kiusiu 

 nebidosus, both anatomically and geographically. It differs from 

 nebulosus in the greater fineness of its black spotting, and in the tail 

 being trigonal in cross section rather than oval as in nebulosus. It is, 

 however, very close to it, and as I have seen no specimens of nebulosus 

 it may be that I am employing too fine discrimination. However, 

 none of the Iki-shima specimens can be matched by Schlegel's (1838) 

 figure of nebulosus, and the present form i.^ certainly distinct from the 

 Hondo and Tsu-shima species, so that I think myself justified in 

 naming it. 



Specimens seen: 179, as follows; 

 Iki-shima, 179 (Cal. Acad.- Sci. 26149-26327). 



Measurements oi Hynobius ikishimae. 



I = costal folds I i ■' i appressed toes. 



Sex 



male 



