1908.] NATURAL SCIENCES OF PHILADELPHIA, 127 



Batrachoseps Bonaparte (Fauna Ital., II, 131). 



Type Salamandra attenuaia Esch. By original designation. 

 AMBYSTOMIDJE. 



Dioamptodon Strauch (Mem. Acad. Sci. St. Peters., (7), XVI, No. 4, p. 68, 1870). 



Monotype Triton ensatus Esch. 



Ambystoma Tschudi (Mem. Soc. Neuchatel, 1838, pp. 57, 92). 



Type Ambystoma subviolacea Tsch. (= Lacerta punctata Linn.). By 

 original designation. 



> Linguelapsus Cope (1SS7). Type L. lepturus Cope. 

 ChondrotUS Cope (Amer. Naturali-st, 1887, p. 88). 



Type Chondrotus tenebrosus. By original designation. 

 CR YPTOBR ANOHID^ . 



CryptobrancllUS Leuckart (Isis, 1821, Litt. Anz., p. 260). 



Monotype Salamandra gigantea Barton (= Cryptobranchus alle- 

 gheniensis) . 



AMPHIUMID^. 



Amphiuma Garden (Smith's Corres. of Linn*us, I, 599). 



Type Amphiuma means Gard. By original designation. 

 PROTEIDiE. 



Necturus Rafinesque (Jour, de Phys., Vol. 88. p. 418, 1819). 



JMonotype Necturus macidatus. 



Rafinesque gave the names of six species under Necturus, of which 

 macidatus is the only one recognizable, leaving the genus practically 

 monotypic. 



SIRENID^. 

 Siren Linn. (Syst. Nat., Ed. XII, p. 371, 1766). 



Monotype Siren lacertina Linn. 



Fseudobranchua Gray (Ann. of Philos., 1825, p. 216). 



Monotype Siren striata LeConte. 



