24 



BULLETIN 58, UNITED STATES NATIONAL MUSEUM. 



from the Yaeyama group, and conse(|uentlT appears to be confined 

 to the central group of the Eiu Kins. 



List of specimens of JJinnictylus cnsicauda. 



oCotypes: description, p. 21, and flgures, p. 22. 



6 Description, p. 21. 



Family AIMBYSTOMID.E. 



Two subfamilies based upon cranial and hyoid characters maybe 

 recognized, the Hynobiina^, wliich are peculiar to the eastern part 

 of the Old World, and the Ambystominae, which are almost entirely 

 confined to the New World. 



A word may here be said as to the name Ambystomidae for this 

 family. It is derived from the generic name Amhystoma, given by 

 Tschudi in 1838, generally emended to Amhly stoma 

 /\f \ under the erroneous impression that the original 



spelling was due to a misprint, and that Tschudi 

 A A intended to derive it from a/u/SXvg^ blunt. This 



^ emendation is utterly unwarranted for not only 



does Tschudi use the word Amhystoma four times, 

 but it is plainly a legitimate contraction ior An ahy- 

 FiG. 16.— Diagram ok stoma, with allusion to the phrase ava arofia (:ivEiVj 

 to cram into the mouth. The shorter form of Amby- 

 stomidse for Ambj^stomatidse is justified by the per- 

 fectly correct practice in Greek to form composite 

 (From nikolski, words with nouns ending in -j^uv (genitive, -jAarog) 

 Acad. sci. St. Pfe- ^J leaving out the r of the root (Kretschmer, 

 TERSBouRG, 1, 1896, Sprachrcgeln, 1899, p. 

 (jTOfiapyog. 



arrangem e n t of 

 vomerine teeth in 

 Onychodact Y L U S , 

 Salamandrella, 



AND GeOMOLGE. 



19, § 15), for instance, 



KKY TO THE GENERA INHABITING JAPAN AND EASTERN SIBERIA (fig. 16). 



a}. Median angle of vomero-palatine series of teeth extending farther back than the 

 lateral ends. 



h\ Toes five Ilynobius, p. 25. 



62. Toes four Salamandrella, p. 37. 



a*. Vomero-palatine series not extending farther back in tlie middle than on the 

 sides. 



