THE BATRACHIA OF NORTH AMERICA. 509 



PLATE LVII. 



Viscera of Salieutia with the digestive organs removed. There remain the urogeni- 

 tal, the respiratory, and the central circulatory systems. 



Fig. 1. Bufo lentiginosus americanus, $ . 



2. Scaphiopns holbrookii, $ . 



3. Bana palustris, $ ; ovary of the right side removed, so as to display the kid- 



ney and oviduct. The greater part of the left lung is also cut off, in order 

 to display the fontanelle of the left oviduct. 



PLATE LVIII. 



Bufo lentiginosus americanus, skeleton, natural size, from above. 



PLATE LIX. 



Bufo lentiginosus americanus, skeleton, natural size, from below. 



PLATE LX. 



Bufo panther inus, natura- size, from below. 



PLATE LXI. 



Xenopus capensis, natural size, from below. 



PLATE LXII. 



Ceratophrys ornatus, natural size, from below. 



PLATE LXIIL 



Fig. 1. Breviceps gihhosns, natural size, from below. 

 2. Pelohates fuscus, natural size, from below. 



PLATE LXIV. 



Fig. 1. Hyla versicolor, natural size, from above. 

 2. Hyla versicolor natural size, from below. 



PLATE LXV. 

 Callula pulchra, natural size, from below. 



PLATE LXVI. 

 Bana cateshiana, natural size, from above. 



PLATE LXVII. 

 Bana cateshiana, natural size, from below. 



PLATE LXVIII. 



Details of osteology of Salientia, including Discoglossidce, Asterophrydidce, Pelodytidce, 



and SeapMopidce. 



Fig. 1. Spea hammondii hammondii, cranium from above, and a sternum of subspe- 

 cies homhifrons. 



2. Scaphiopus couchii, sternum. 



3. Scaphiopus holbrooMi, skull and sternum (a). 



4. Didocus calcaratus, skull. 



5. Pelobates fuscus, sternum of large tadpole. 



