224 BULKETIN 16 0, UNITED STATES NATIONAL MUSEUM 



unicolor, Microps, 186. 

 usta, Gastrophryne, 6, 183 (key), 187. 

 ustum, Engystoma, 187, 188. 

 utricularius, Rana, 203, 305. 



vaillanti, Rana, 200 201. 



vaUiceps, Bufo, 11, 29, 35 (key), 49, 



68, 80. 

 vanvlietii, Hyla, 160. 

 variegata, Nannophryne, 29. 

 variolosum, Engystoma, 183, 184. 

 variolosus, Hypopachus, 183 (key), 



184. 

 venulosa, Hyla, 130, 142, 148, 149, 151 

 (key), 155 (key), 176. 

 Rana, 148, 176. 



venustus, Eleutherodactylus, 13, 91, 

 97 (key), 117. 



Hylodes, 117. 

 verrucipes, Syrrhophus, 127 (key), 138. 

 verruculatus, Phyllobates, 11, 129. 



Syrrhophus, 126 (key), 139. 

 versicolor, Hyla, 148. 

 virescens, Rana, 203, 206, 208. 

 viridis, Hyla, 147. 

 vulgaris, Bufo, 27, 28. 



woodhousii, Bufo, 29, 32 (key), 73. 



xerophyllum, Hyla, 148. 



zonata, Hyla, 149. 



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