HERPETOLOGY OF JAPAN. 35 



the posterior branches but shghtly convergmg, the posterior end of each 

 making a sudden bend to meet its fellow on the other side ; the extreme 

 length of the series equals four-sevenths the width of the tongue ; head 

 large, depressed, as broad as long; eyes rather large, prominent; body 

 medium, distance from snout to gular fold contained less than three 

 times m distance from gular fold to anterior end of vent; limbs well 

 developed, fingers and toes interlocking when laid against the body; 

 fingers and toes moderate, depressed, fifth toe well developed; tail 

 long, the distance from tip to anterior end of vent exceeding that 

 from the latter point to end of snout, strongly compressed, pointed, 

 keeled above and below, the upper keel originating almost opposite 

 the posterior end of the vent ; skin smooth, except on the tail, where 

 it is rather strongly rugose; sides with eleven very distinct costal 

 grooves; a medium dorsal groove; parotoids indistinct; gular fold 

 strongly marked underneath, but not on the sides; no groove from 

 eye to gular fold; no groove behind angle of the jaws; vent (of male) 

 a longitudinal slit meeting two short, lateral, converging slits anteri- 

 orly ; a large papilla at the anterior end ; a distinct transverse groove 

 at the posterior end; borders greatly swollen. Color uniform 

 blackish above, the whole surface finely dusted over with minute 

 pale specks, below consideraldy paler, the specks predominating over 

 the black ground; tail uniformly dark, including the keels. 



Dimensions. 



mm. 



Total length 150 



From snout to gular fold 20 



From gular fold to vent 54 



Vent to tip of tail '. 76 



Width of head 14 



Fore limb 25 



Hind limb 25 



An adult female in the Science College Museum (No. 52a) agrees 

 with this species in many points especially m the number of costal 

 folds, which are only eleven. It differs, however, in lacking the fin on 

 the tail. This maybe seasonal, and in the absence of precise informa- 

 tion as to the seasonal changes of the various species of Hynohius, 

 I am inclined to regard it as belonging to the present species. It 

 measures, total length, 108 mm. ; snout to vent, 59; vent to tip of tail, 

 49; tip of tail to gular fold, 15.5; axilla to groin, 28 ; width of head, 11. 



Habitat. — The only locality where this species has been found 

 thus far is Sendai, Hondo, whence came the type and four other 

 specimens in the Science College Museum. A specimen doubtfully 

 referred to this species is from Nikko. 



Remarks. — In its compressed tail and only eleven costal grooves 

 this new species approaches H. lichenatus. The latter has a very 

 short vomerine series and the fifth toe rudimentary. 



