Bulletin 34, U. S. National Museum. — Cope. Batrachia of North America. 



Plate IX. 



etiu 



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epg 



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ho so 







pop 



h'br' b.brz 



P^ 7? 



tr rol f \iK 9 \P^PP ^,?^9 



poc- 



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e^br"'' 



hUr^ hbr' 



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ppc 



di hhjy b'.hr 



* occ 



Siren, Proteus, and Amphiuma. 



