LIST OF PLATES. 



1. MONODON (Provincial Museum, Halifax ; from Jacquet River, N. B.) 



Sternum, one-half natural size. Periotic, natural size. 



2. MONODON (Provincial Museum, Halifax ; from Jacquet River, N. B.) 



vertebrae, about one-fifth natural size 



3. MONODON (Provincial Museum, Halifax ; from Jacquet River, N. B.) 



Dorsal vertebrae, one-third natural size. 



4. MONODON (Provincial Museum, Halifax ; from Jacquet River, N. B.) 



Lumbar and caudal vertebrae, one-third natural size. 



5. DELPHINAPTERUS VERMONTANUS, THOMPSON (State Museum, Mont- 



pelier, Vt. ; from Charlotte, Vt). Upper figure one-fourteenth 

 natural size ; lower figures about one-fourth natural size, 



6. DELPHINAPTERUS VERMONTANUS, THOMPSON- (State Museum, Mont- 



pelier, Vt. ; from Charlotte, Vt.). Anterior part of skeleton, about 

 one-seventh natural size. 



7. DELPHINAPTERUS VERMONTANUS, THOMPSON (State Museum, Mont- 



pelier, Vt. ; from Charlotte, Vt.). Sternum and ribs, one-third 

 natural size. 



8. DELPHINAPTERUS VERMONTANUS, THOMPSON (State Museum, Mont- 



pelier, Vt.; from Charlotte, Vt.). Periotic, natural size. 



(164) 



