Fig. 1.-Type of B. tectirostris (Cope). Fig. 2.-Cape Cod, Mass., No. 16045 U. S. N. M. Fig. 3.-Cape Cod, Mass., No. 16039 U. S. N. M. Fig. 4.-Type of B. tectirostris (Cope); first rib, first lumbar vertebra, first dorsal vertebra, axis. SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE, VOL. XXXIII. FIG. 1. FIG. 2. FIG. 3. Fig. 1. Cervical and dorsal vertebræ. Fig. 2.-Lumbar vertebræ. Figs. 3 and 4.-Caudal vertebræ. BALENOPTERA PHYSALUS (L.). [TYPE OF B. TECTIROSTRIS (COPE).] FIG. 4. |