10 MEGAPTERA. 



Puescopia. Gray. Proc. Zool. Soc, 1864. p. 207. 



Head moderate; baleen short, broad; skin of throat plicated or 

 folded; pectorals long and narrow, one-fourth of the entire length 

 of animal; dorsal low: vertebrfe, 53; cervical vertebra?, free. 



11. nodosa. {Bahrn,i), Bonn. Cetol.. 17S9, p. 5. 



longimana, Rudolphi, Abh. Ak. Berl., 1S29, pis. 1-5. 



keporkak, Eschr. K. Dansk. Vid. Selskabs. Afh., 1845, xl, p. 

 239. t. I, 3, 4. 



americana. Gray, Zoo). Erebus and Terror, 1846, p. 17. 



Geogr. Distr. Arctic and North Atlantic Oceans. 



Genl. Char. Pectorals very long, their margins scalloped. 

 Dorsal fin hump-like. Body short, thick: mandible projecting beyond 

 upper jaw. 



Color. Above black; beneath white spotted with gray: pectorals 

 white except the base which is black. 



Aleasuremenis. Total length of female 45 to 50 feet; male 

 smaller. 



a. — osphyia. (J/egap/era), Cope. Proc. Acad. Nat. Scien. Phil., 1865, 

 pp. 178-180. 



Tjpe loiality. Coast of Maine forty miles from Petit Menan 

 lighthouse. 



Geogr. Distr. Atlantic Ocean. 



Genl. Char. Posterior cervical vertebrae with long inferior lat- 

 eral processes; that of the fifth as long as the second; cranium 

 broad, and one-fifth or less of the total length: fins short, one fifth 

 total length. Neural arches and spines of dorsal and lumbar regions 

 greatly elevated, the vertical diameter of the centrum in the 33d 

 vertebra; being 9.75 inches, and the height of the arch and spine 

 17.87 inches; the position of the zygapophysis measuring half the 

 elevation. Ribs, 14 pairs. 



Color. Only skeleton preserved. 



Measurements. Total length, 50 feet. Breadth of cranium from 

 the tips of orbital processes, 6.41 feet; between coronoids of mandi- 

 ble. 5.75 feet: height of scapula, 29.6 inches, breadth, 44.4 inches. 



12. versabilis. {Megaptera), Cope. Proc. Acad. Nat. Scien. Phil., 1869, 



P- 15- 



Type locality. Northwest coast of America. 



Geogr. Distr. North Pacific Ocean, California to Alaska. 



Genl. Char. Pectoral fins between one-third and one-fourth the 

 total length; pectoral and gular folds 26. 



Color. Above black, and in the most typical form the belly •• is 

 said to be entirely black " (Cope. 1. c. ) ; external face oj the pectorals black. 



