EXPLANATION OF PLATES. 315 
PLATE 26. 
FIGURE 1. Balcenoptera davidsoni Scammon. Type-skull. No. 12177, U. S. National Museum. Admiralty 
Inlet, Puget Sound, Washington. Lateral view. 
FIGURE 2. Balenoptera acuto-rostrata Lacépéde. No. 20931, U.S. National Museum. Off Monomoy Point, 
Harwichport, Mass. Young. Lateral view. 
FIGURE 3. The same species. No. 13877, U.S. National Museum. Coast of Norway. Lateral view. 
PLATE 27. 
FIGURE 1. Balenoptera davidsoni Scammon. No. 61715, U. S. National Museum. St. Paul Island, 
Pribilof Group, Bering Sea. Lateral view. 
FIGURE 2. Balenoptera acuto-rostrata Lacépéde. No. 20931, U. S. National Museum. Off Monomoy Point, 
Harwichport, Mass. Young. Lateral view. 
FIGURE 3, The same species. Right scapula of skeleton No. 13877, U. S. National Museum. Coast of 
Norway. Adult. 
FIGURE 4. The same species. Scapula of skeleton No. 20931, U.S. National Museum. Off Monomoy Point, 
Harwichport, Mass. Young. 
FIGURE 5. The same species. Sternum of skeleton No. 13877, U. S. National Museum, Coast of Norway. 
Adult. 
FIGURE 6. The same species. Sternum of skeleton No. 20931, U.S. National Museum. Off Monomoy Point, 
Harwichport, Mass. 
PLATE 28. 
FiGuRE 1. Balcenoptera davidsoni Scammon. Valdes, Alaska. Ventral view. Photographed by F. C. 
Schroeder, U. 8. Geological Survey. 
FIGURE 2. The same specimen. Dorsal view. 
Ficure 3. Balenoptera acuto-rostrata Lacépéde. Quoddy Head, Maine. Ventral view. 
FIGURE 4. The same specimen. Lateral view. 
Fiaure 5. Balenoptera velifera (?), Anterior portion of skeleton in Wistar Institute, University of Penn- 
sylvania, Coast of California. 
FIGURE 6, The same, showing cervical and anterior dorsal vertebre. 
PLATE 29. 
Figure 1. Megaptera bellicosa Cope. Type-skull. San Domingo or St. Barthlomew Island, West Indies. 
Philadelphia Academy of Natural Sciences. Dorsal view. 
FIGURE 2. Megaptera nodosa (Bonnaterre). No. 21492, U.S. National Museum. Cape Cod, Mass. Dorsal view. 
PLATE 30. 
Figure 1. Megaptera bellicosa Cope. Type-skull. Ventral view. 
FIGURE 2. Megaptera nodosa (Bonnaterre). No. 21492, U.S. National Museum. Cape Cod, Mass. Ventral view. 
PLATE 31, 
Figure 1. Megaptera bellicosa Cope. Type-skull. Lateral view. 
FIGURE 2. Megaptera nodosa (Bonnaterre). No. 21492, U.S. National Museum, Cape Cod, Mass. Lateral view. 
FIGURE 8. The same species. Cape Cod, Mass. Milwaukee Public Museum, Lateral view. 
PLATE 32. 
Fieure 1. Megaptera nodosa (Bonnaterre). No. 4$382, 2, U. S, National Museum. Provincetown, Mass. 
Young. Dorsal view. 
FIGURE 2. The same species. Cape Cod, Mass. Milwaukee Public Museum. Dorsal view. (The figure is 
much distorted.) 
PLATE 33. 
FIGuRE 1, Megaptera nodosa (Bonnaterre), No. 48282, 9, U.S. National Museum, Provincetown, Mass. 
Young. Ventral view. 
FIGURE 2. The same species. Cape Cod, Mass. Milwaukee Public Museum. Ventral view. 
