38 BULLETIN 5S. UNITED STATES NATIONAL MUSEUM. 



BouLENGER, Cat. Batr. Grad. Brit. Mus., 1882, p. 34 (Shilka; Baikal); 

 Ann. Mag. Nat. Hist. (6), V, Feb. ]890, p. 144 (Khabarovka, Doorries 

 oolk'ctor).— MuELLEK, Vcrh. Naturf. Ges. Basel, VIII, Pt. 2, p. 250 

 (Ivliabarovka). — Bedriaga, Wiss. Result. Przewalski Zentralasiat. Reise, 

 Zool., Ill, Pt. 1, lief. 1, Amph., 1898 (p. 8) (Ksernzo, Prov. Sze-Chuan, 

 China). — Nikolski, Zap. Imp. Akad. Nauk, S. Peterburg, (8) XVII, 

 No. 1, 1905, p. 436 (Yekaterinburg to Kamchatka). — Salamandrella keyser- 

 lingi Wolterstorpf, Verh. _V Internat. Zool. Congress, Berlin, 1901 

 (1902), p. 585 (Verkhoyansk). 



1870. Isodactylium schrenkii Strauch, Mem. Acad. Sci. St. Petersbourg (7), XVI, 

 No. 4, 1870, pp. 56, 110, pi. ii, fig. 1 (t>'pe-locality, osist Siberia: Ussuri, 

 Shilka, and Lake Baikal; types in St. Petersburg Mus.; Schrenck, col- 

 lector).— Sabaneef, Bull. Soc. Nat. Moscou, XLIV, Pt. 2, 1872, p. 275 

 (Yekaterinburg, Ural). — /. schrenki Shitkov, Zool. Anz., XVIII, May 6, 

 1895, p. 165 (Yekaterinburg, Ural Mts.; reproduction and development). 



1870. Isodactylium wosnessenskyi Strauch, Mem. Acad. Sci. St. Petersbourg (7), 

 XVI, No. 4, 1870, p. 58, pi. ii, figs. 2a-da (type-locality, Javina, south- 

 ern Kamchatka; types in St. Petersburg Mus.; I. G. Wosnessensky, col- 

 lector). — Salamandrella wosnessenskyi Boulenger, Cat. Batr. Grad. 

 Brit. Mus., 1882, p. 34 (Kamchatka). 



1896. Salamandrella uralensis Nikolski, Annuaire Mus. Zool. St. Petersbourg, 

 I, p. 13 {nomen nudum). 



1905. Salamandrella keyserlingii var. tridactyla Nikolski, Zap. Imp. Acad. Nauk, 

 S. Peterburg (8), XVII, No. 1, p. 491 (type-locality, Vladivostok; type 

 Mus. Acad. St. Petersburg, No. 2279; Palchevski, collector). 



Until recently S. Jceyserlingii and S. wosnessenskyi have been con- 

 sidered distinct species. According to Strauch the main differences 

 between them as recognized by him are as follows: 



Tail at most seven times as long as its height at the middle; the outer branch of each 

 vomerine row of teeth bent straight backward S. keyserlingii 



Tail at least nine times, or even ten times, as long as its height at~the middle; the 

 outer branch of each vomerine row of teeth not bent liackward but directed out- 

 ward 1 S. wosnessenskyi 



Neither of these characters holds in a large series of specimens. 



In seven, mostly well preserved, Kamchatkan specimens which con- 

 sequently represent S. wosnessenskyi I find both extremes of palatine 

 dentition as described above and figured by Strauch. It ntay even be 

 stated that the extreme obtuseness of the lateral angles as shown in his 

 figure of the skull '' of the Kamchatkan species is not equaled by any 

 of the specimens at hand, while one, at least (U.S.N.M. No. 31716), has 

 an open median angle and acute anterior angles in excess even of 

 Strauch's figure of S. keyserlingii. ^ 



The distinction derived from the alleged lesser elevation of the tail 

 in S. tvosnessenskyi also falls to the ground, as an inspection of the sub- 

 joined table of dimensions (p. 41) shows. None of my seven speci- 

 mens has the tail more than nine times as long as high, and only two 



o Reproduced in this work on Plate V, figs. 7-8. 



bM6m. Acad. Sci. St. P^ersbourg (7), XVI, No. 4, pi. ii, fig. 2d. 



cidem,, fig. 1, 



