HERPETOLOGY OF JAPAN. ] 25 



weak; a weak outer metatarsal tubercle; subarticular tubercles 

 rather weak, the distal one triangular, with the base iorward; a 

 decided tarsal fold; tibio-tarsal articulations reach center of tym- 

 panum when hind legs are carried forward, and do not overlap when 

 legs are bent at right angles to axis of body; tibia less than one-half 

 the total length; skin above and on sides densely granular, with 

 prominent tubercles in addition to a number of irregular series of 

 short longitudinal ridges, which are largest on the middle of the back, 

 smallest on the head, all these ridges tubercular like the rest of the 

 skin; upper eyelids coarsely tubercular, as also the loreal region; 

 even the tympanum is studded with smaller tubercles; no dorso- 

 lateral fold; a number of prominent tubercular glands behind tym- 

 panum; underside smooth, but transversely creased, throat and 

 posterior aspect of femurs very coarsely granular. Color (in alcohol) 

 dark brownish olive, with obscure dusk}' spots and dark cross bands 

 on legs; underneath pale, uniformly and densely mottled with dusky. 



Dimensions. 



mm. 



Total length, tip of .snout to vent 56 



Width of head 22. 5 



Fore leg 30 



Hind leg, vent to tip of longest toe 83 



Tibia 25 



The adult male in the breeding season (U.S.N.M. No. 34436; Mount 

 Fuji, Hondo; May, 1898) is smaller, with relatively shorter bod}', 

 somewhat fuller webs, and a large swelling at the base of the first 

 finger covered with asperities, though not so large as in the species 

 previously described. 



There are no vocal sacs, internal or external. Boulenger'* says: 

 "Male with external vocal vesicles," but as there were then no male 

 specimens in the British Museum he probably had this information 

 from Hallowell, who attributes large vocal vesicles to this species. As 

 I have already shown, the specimens with such, which Hallowell took 

 for R. rugosa, were in reality R. nigroinaculata. 



Variation. — On the whole, this species is very uniform, the greater 

 or lesser distinctness of the blackish markings mostly due to a vary- 

 ing shade of the ground color being the chief source of variation. 

 Hilgendorf mentions that one of his specimens (Berlin Mus. No. 4312) 

 lacks the vomerine teeth. 



Hahitat. — This very distinct species appears to be confined to Japan 

 proper,'' i. e., to the islands of Hondo, Kiusiu, and Shikoku. Doctor 



a Oat. Batr. Sal. Brit. Mus., p. 35. 



& Von Martens (Preuss. Exped. Ost-Asien, Zool., I, 187(3, p. 384) has recorded it from 

 Hongkong, China. The identification, which seems to be by Peters, is probably c-orrect, 

 but the locality is most likely erroneous. Hallowell records two specimens from 

 Ooshinia, but they were probalily Nana nigromaculata, like the male specimens from 

 Simoda, which he also identified as R. rugosa. 



