124 



BULLETIN 58, UNITED STATES NATIONAL MUSEUM. 



Pt. 5, Apr. 1879, p. 868 (Tokyo, Yokohama). — Hilgendorf, Sitz. Ber. Ges, 

 Naturf. Fr. Berlin, 1880, p. 119 (Yokohama; HakoneMts.). — Boulenger, 

 Cat. Batr. Sal. Brit. Mus., 1882, p. 35 (Japan).— Okada, Cat. Vert. Jap., 

 1891, p. 67 (Tokyo; Suwo).— Fritze, Mitth. Deutsch. Ges. Ost-Asiens, V-, 

 1891, p. 239 (Yezo).— BoETTGER, Kat. Batr. Mus. Senckenberg., 1892, p. 4 

 (Hakone Lake; Nikko; Yokohama). — Ikada, Annot. Zool. Japon., I, 

 Pt. 3, Aug. 1897, p. 114 (breeding season). 



Hallowell's R. rugosa " belongs only partly to this species, being 

 evidently composed of two species. The small ones "marked 13 

 in the catalogue . . . found along the mountain streams at 

 Simoda, Japan, May, 1855," which he describes as "presenting the 

 conical pustulations upon the longitudinal elevations upon the back," 

 are in all probability true R. rugosa/' but the others from "Ousima," 

 and the two larger ones from Simoda, of which the last-mentioned 

 ones are in our collection (U.S.N.M. No. 7415) belong to R. nigro- 

 maculata. This blunder of TTallowell's is the more remarkable, as 

 R. rugosa is one of the most easily recognized species, because of its 



106 



Figs. 104-10C.—RANA RUGOSA. l^ X nat. size. 104, top of head; 105, side of head; lOd, open mouth. 



No. 2354.3, U.S.N.M. 



excessive roughness, which makes it appear more like a toad than a 

 frog. The hollow snout is also quite characteristic. 



Description. — Adult female; U.S.N.M. No. 23543; Yokohama, 

 Hondo; September, 1896; L. Stejneger, collector (figs. 104-106). 

 Vomerine teeth in two small groups, their anterior l)order on a line 

 through the center of the choana^ and more distant from the latter 

 than from each other; nostrils much nearer the tip of snout than the 

 eye; snout and lores concave, the canthus rostralis forming a ridge 

 separating the two concavities; interorbital space less than width of 

 upper eyelid; tympanum nearly circular, fully three-fourths the 

 diameter of the eye distant from the latter less than one-half its own 

 diameter; fingers not tapering, roimded at end, first somewhat 

 opposable and longer than second, with a small swollen pad at the 

 base; webs of toes fidl, the excision opposite the distal end of the first 

 phalanx of fourth toe; inner metatarsal tubercle small and rather 



«Proc. Phila. Acad., 1860, p. 499. 



b They are not in the U. S. National Museum. 



