HYNOBIIDAE. 489 



under upper in front and behind ; a groove from hind angle of eye to 

 gular fold; a groove from this down behind angle of jaw; limbs well 

 developed; fingers 2, 3, 4, 1 in order of length; toes 3, 4, 2, 5, 1 in 

 order of length; a tubercle under base of first finger and of first toe; 

 tail shorter than body, cylindrical at base, flattened at tip, just past 

 level reached by appressed toes trigonal with a low dorsal keel, scarcely 

 widened anywhere; vent a longitudinal slit, slightly forking forwards, 

 so that there is a small triangular flap at apex; vomerine series be- 

 ginning behind and in from inner border of nares, a short forward and 

 incurving branch of 4-5 teeth, a long straight branch of 17 teeth ex- 

 tending back and slightly in, a short branch of 2 teeth curving in to 

 meet its fellow of opposite side; series separated from its fellow in 

 front by 1| length of outer branch, and posteriorly by length of outer 

 branch ; length of inner branch equals distance between outer edge of 

 naris and the peak of the opposite vomerine series; brownish gray 

 above, with fine crowded darker stippling, middorsal line of tail 

 slightly lighter; below light, nearly covered with faint gray marbling; 

 total length 116 mm., head 15.5, body 51, tail 49.5. 



Remarks: The specimen mentioned by Stejneger (1907, p. 31) as 

 collected by Hoist in Tsu-shima, Oct. 6, 1891, seems to be this form 

 rather than the Tsu-shima South species. He describes the color of 

 the specimen, a female, Brit. Mus. No. 92.1.11.18, as "yellowish brown 

 with numerous obscure dusky spots ; underneath uniform pale brown- 

 ish, this pale effect being produced by a uniform dusting of minute, 

 round, yellowish specks on a dark brownish gray ground." 



"Total length 117, snout to vent 68, snout to gular fold 16, vent to 

 tip of tail 49." 



This species is a member of the group comprising the animals of 

 Tsu-Shima South, Iki-shima, 7icbnlosus of Kiusiu, vandenburghi of 

 Hondo, and the undescribed form from Shikoku. From them all it 

 differs in color. I cannot find a match for it in a series of 168 adults 

 from the South island. In that species the sides of the tail are always 

 black, the ground color is yellow, the black spotting is coarse and 

 irregular, and unless the animal is uniform black (as in some old males) 

 the middorsal line of the tail is bright yellow. The Iki-shima form 

 has a shorter head, the color is much darker, although the spots are 

 fine as in tagoi, and again unless the animal is uniformly dark the 

 middorsal line of the tail is yellow. Nebulosus of Kiusiu is similar to 

 the South Tsu-shima form, but the sides of the tail are not black, while 

 the Hondo form is abundantly distinct by reason of its very flat tail. 



Specimens seen : One, the type. 



