HERPETOLOGY OF JAPAN. 



133 



well marked; lores concave; interorbital space slightly wider than 

 upper eyelid; tympanum one-half the diameter of eye and scarcely 

 more than its distance from the latter; fingers free, first extending 

 beyond second almost the length of the disk, and with smooth swelling 

 at base; disks large, about two-thirds the diameter of tympanum, 

 rounded anteriorly; toes moderately webbed, two distal phalanges of 

 fourth toe being free and the excision of the web reaching to the distal 

 third of the basal phalanx of the same toe; subarticular tubercles 

 prominent; a flat, weak, inner metatarsal tubercle, less than one-half 

 the length of the first toe measured from the tubercle; no outer 

 tubercle; a tarsal fold; specimen too hardened to be unbent or legs 

 stretched out, but tibio-tarsal articulation would probably reach 



Figs. lll-llO.— Rana ishikaw^. § X nat. size. ill. top of head; 112, side of head; 113, open 

 mouth; 114, underside of hand; 115, underside of foot (1^ X NAT. size), 1; 116, tip of digit. 

 No. 30, Imp. Mus. Tokyo. 



between eye and tip of snout; tibio-tarsal articulations of bent 

 hind legs overlapping slightly; skin of upper surface exceedingly 

 rough, even on upper eyelids and sides of face, the tubercles assuming 

 a very extraordinary pattern caused by the smaller tubercles sur- 

 rounding concentrically a number of large round pustules which are 

 wrinkled radially from the central prominence; sides very roughly 

 studded with closely set, large, wrinkled tubercles; underside finely 

 granular, except posterior aspect of femur, which is coarsely so. 

 Color (in alcohol) above brownish, a network of chocolate brown 

 surrounding the large insular tubercles, which are ochraceous-buff, 

 with the central prominence darker brown; lips pale, blotched with 



