HERPETOLOGY OF JAPAN. 171 



elongated median postmentals; top of head, back, and throat covered 

 with uniform granules, without tubercles, belly with scales several 

 timies larger than the dorsal granules; parachute covered above with 

 larger quadrangular scales in horizontal rows alternating like bricks 

 in a wall, below apparently entirely without scales ; an angular series of 

 eight preanal pores, and a series of about twelve smaller pores near the 

 distal end of the femur; the whole animal is strongly depressed and 

 laterally surrounded by a series of dermal expansions or flaps, the one 

 on the body between axilla and groin assuming the character of a para- 

 chute, being more than one-half the width of the whole body ; a small Hsip 

 behind angle of mouth 

 underneath the ear-open- ^^ 



ing, one m the angle be- ^^^s « fism^^^\ 



tween upper and lower a^'^s^-.s^,....,^^^^^^^ _ • 



arms, and a small one on 

 the posterior side of each 

 of these; similar flap m 

 angle between femur and 



tibia behind, and a small i^e 



one on the outer side of les 



the tibia, but none on the 

 femur; tail with a lateral 

 series of small rounded ^5^ 



lobes, gradually decreas- ^^-^ 



ing in size toward the tip <^rt^i:^<st -^^i^x . \i \ 

 which is not expanded; *t^i^^. ^I'V 



the segments thus indi- 

 cated by each pair of ^^^/^-'f-^-- 

 lobes are further marked 

 by a couple of slightly 



. ^ n , 1 Figs. 164-166.— Ptychozoon horsfieldii. IJ X nat. size. 



enlarged Hat scales on i64, side of head; i65, underside of right hind leg and 



the upper surface of the foot; lee, underside of tail, middle and terminal por- 

 ., ,. ,. 1. TIONS. No. 24030, U.S.N.M. 



tail near the median Ime; 



hands and feet webbed to the tips of the digits. Color (in alcohol) 

 light drab gray above with four narrow, wavy, dusky cross bands on 

 the back and six wider bars on the tail; a line of ill-defined circular 

 spots of same color from eye to shoidder; underneath whitish. 



Dimensions. 



mm. 



Total length 130 



Snout to vent 68 



Vent to tip of tail 62 



Snout to eye 8 



Snout to ear-opening 18 



Width of head 15 



Fore limb 32 



Hind limb 62 



