EXPLANATION OF PLATES. 317 



PLATE 42. 



FIGURE 1. Balcena glacialis Bonnaterre. Skull from skeleton No. 23077, U. S. National Museum. Long 



Island, New York. Dorsal view. 

 FIGURE 2. The same specimen. Ventral view. 



PLATE 43. 



FIGURE 1. Balcena glacialis Bonnaterre. Skull from skeleton No. 23077, U. S. National Museum. Long 



Island, New York. Lateral view. 

 FIGURE 2. The same species. Skull from skeleton in State Museum, Raleigh, North Carolina. Cape Lookout, 



N. C. Lateral view. Photograph presented by Mr. H. H. Brimley, Curator of the State Museum. 



PLATE 44. 



FIGURE 1. Baltena cisaretica Cope. Type-skeleton. Philadelphia Academy of Natural Sciences. Lateral 



view of anterior portion, including the lumbar vertebrae. 

 FIGURE 2. The same specimen. Lateral view of the caudal vertebras. 



PLATE 45. 



FIGURE 1. Balmia glacialis Bonnaterre. Skull from skeleton in Charleston College Museum, South Caro- 

 lina. Charleston, S. C. Lateral view. 



FIGURE 2. The same species. Left scapula from the same skeleton. 



FIGURE 3. The same species. Left scapula from skeleton in American Museum of Natural History, New 

 York. From Long Island (?), New York. Photograph presented by Dr. H. C. Bumpus, Director of 

 the American Museum of Natural History. 



FIGURE 4. The same species. Left scapula from skeleton in Field Columbian Museum, Chicago. Long Island, 

 New York. Photograph presented by Dr. D. G. Elliot, Curator of Mammals, Field Columbian Museum, 



FIGURE 5. The same species. Left scapula from skeleton No. 23077, U. S. National Museum. Long Island. 

 New York. 



PLATE 46. 



FIGURE 1. Balcena glacialis Bonnaterre. Head of specimen found dead 28 miles off Highland, Cape Cod, 

 April, 1895. Photographed in Herring Cove, Provincetown, Mass. 



FIGURE 2. The same specimen. Lateral view. (The flukes are an addition by the photographer.) 



FIGURE 3. The same species. Sternum from skeleton in Field Columbian Museum, Chicago. Long Island, 

 New York. Photograph presented by Dr. D. G. Elliot, Curator of Mammals, Field Columbian 

 Museum. 



FIGURE 4. The same species. Sternum from skeleton in Museum of Comparative Zoology, Harvard Uni- 

 versity. Photograph presented by Mr. Outram Bangs, Curator of Mammals. 



PLATE 47. 



FIGURE 1. Rhachianectes glaucus Cope. No. 13803, U. S. National Museum. Monterey, Cal. Dorsal view. 

 FIGURE 2. The same specimen. Ventral view. 

 FIGURE 3. The same specimen. Lateral view. 



PLATE 48. 



FIGURE 1. Common Finback. Balcenoptera physalus (L.). Restoration, based on Sars's figures, amended 



from photographs and sketches of Newfoundland specimens. 

 FIGURE 2. Sulphurbottom, Balcenoptera musculus (L.). Restoration, prepared in the same manner as Figure 1. 



PLATE 49. 



FIGURE 1. Little Piked Whale, Balcenoptera acuto-rostrata Lacepede. Restoration, based on the Quoddy 



Head, Maine, specimen. 



FIGURE 2. Pollack Whale, Balcenoptera borealis Lesson. After Collett. 

 FIGURE 3. Gray Whale, Rhachianectes glaums Cope. After Scammon. 



PLATE 50. 



FIGURE 1. Humpback, Megaptera nodoxa (Bonnaterre). Restoration based on Sars's figures amended from 



Newfoundland specimens. 

 FIGURK 2. North Atlantic Right Whale, Balcena glacialis Bonnaterre. Restoration based on photographs 



of Massachusetts and Long Island specimens. 



