HYNOBIIDAE. 487 



nares, length equalling distance between outer edges of nares; bluish 

 brown above, lighter below; small light flecks over whole dorsal 

 surface: total length 121 mm., head 17.5, body 65.5, tail 39. 



Variation: A male, Cal. Acad. Sci. No. 27258 Hida Province, 

 Hondo, differs in having 14 costal grooves; 3 costal folds between 

 appressed toes; head width 5 in length from snout to vent; head 

 length 3f in length of body; vomerine series beginning behind middle 

 of nares; main branch S-shaped, of 25 teeth, meeting its fellow behind; 

 length equalling distance between outer edges of nares plus width of 

 nares; total length 108 mm., head 15, body 51, tail 42. Tago (1907) 

 gives averages of 13 males and 22 females from Takaramura, Yoshi- 

 shiro district, Hida Province, as follows: 



I refer the three specimens of H. naevins mentioned by Abe (1921), 

 from ^Yestern Hondo to this species, not without misgivings. The 

 Etchu specimen had 4 toes. Measurements as follows: 



Etchu Prov. 9 total 120 head 14 body 56 tail 50 13 costal grooves 

 Fukui Pref. 9 " " 14 " 47 " 13 " 



Gifu Pref. ? " " 15 " 53 " — 13 " 



Maki (1921) says "recently Prof. Watase found one at Kuroba, 

 Toyama." 



I refer two larvae, Cal. Acad. Sci. Xo. 16322-3, from Miyazu, Tango 

 Province, Hondo, to this species with considerable doubt. They 

 may belong to H. naevius. They have 13 costal grooves and one costal 

 fold separates the appressed toes. They have four toes. The color 

 is rather light brown with two black cross-bands on body, one just 

 back of legs, and two or three on tail. 



Tago (1907) says that in his series, referred to above, one out of 

 twenty has five toes. 



Habits: According to a letter from Mr. Yasutaro Mayeda, quoted 

 by Tago (1907), the habits at Kami, Takaramura, Yoshishiro district, 

 Hida Province, are as follows: " Above the reservoir where the stream 

 is 6-7 feet wide and 6-7 inches deep there is a small spring near the 

 foot of the mountain. About three weeks of every year the animals 

 gather round this spring by hundreds from every direction to breed 



