510 DUNN. 



" In the lake we find both this animal and Hynobius juscus which 

 generally keep apart, the former in shady damp places, with northern 

 exposure, while the latter keep themselves more or less in the sun with 

 eastern or western exposure, and both under cover of rocks and decayed 

 roots, although the former does not burrow as much as the latter, and 

 seems to go into the water at night as they are found in some of the 

 lake fishes — in fact, some had more than two in their stomachs." 



The young " generally live in clear water less than six inches deep, 

 in a small stream or around the lake where there are plenty of bushes 

 on the bank and lots of pebbles on the bottom of the water, or some- 

 times in cold water less than 10 degrees Cent, in hot summer which is 

 found on a north mountain slope. 



" The best way to catch them in these circumstances is to dry out 

 the water first and to move pebbles and rocks at the bottom although 

 very often we use a net. 



" As soon as it loses gills and starts to live on land they go into the 

 bushes or woods and hunt for a place most suited for their comfort 

 and happiness. 



" Even in those places described above they live in most cases singly 

 among mosses, decayed trees, under rocks and even in a decayed hole 

 in a tree near the water, where they hide themselves most of the day 

 and go out at night after food, which mostly consists of live fish, tad- 

 poles, worms, insects, and their eggs as well as young ones. 



" Although they dislike a great deal of sun and dry places they wander 

 far from their lairs at night or during a rain, and often go into the 

 water, or go up to a mountain summit by a stream, and occasionally 

 are caught in a path. 



"Their winter is spent in the ground, under the root of a tree, or 

 rocks or in the hollow of a dead tree, and sometimes they come out in 

 groups. 



" In the spring early in May when the wild azaleas starts to bloom at 

 Hakone they come out of their long winter retirement and start for 

 the distant breeding place along water-ways. On a warm, rainy night 

 with south wind they come out to the lover's lane to find a mate and 

 from every corner of stream, spring, or pond they gather to a com- 

 paratively large river or lake such as that at Kiwadasawa above the 

 Sukumo river at Kuroyuwa (Black Rock) or Suganuma described 

 above and also in Iwaki, my native place, at a junction of two rivers. 



" There is no way to describe accurately their breeding as this is done 

 in the darkness of night. 



" A female taken at this season had 30-40 eggs; whether these eggs 



