GLOBICEPHALUS BRACHYPTERUS. 139 



GLOBICEPHALUS SCAMMONI Cope. 

 Globioeephalus Scammoni, Copo, Proc. Acad. Nat. Sci. Pliila., 1889, p. 21. 



TUis species was iiiaile known by Professor Cope from the descrip- 

 tiou, ineasiireoients, and drawings of Scammon. 



Tliere is in the national collection a skull presented by Scammon 

 which is presumably the type of the species. This skull I hav^e com- 

 l)ared with those of (r. hrachypterm, and, as already stated, have reached 

 the conclusion that the differences observable indicate si)ecific distinc- 

 tions between the blackfish of the east and west coasts. 



Scaminou's measurements of the exterior also differ from those 

 obtained from specimens from the east coast. These differences will 

 be pointed out when treating ot G. hrachyijpterus. 



GLOBICEPHALUS BRACHYPTERUS Cope. 



G. ? sp. nov., Cope, Proc. Acad. Nat. Sci. Phila. 1866, p. 8. 



Globioeephalus hrachyptenis, Copo, Proc. Acad. Nab. Sci. Pliila., 1876, p. 129. 



As early as 1866 Professor Cope entertained the opinion that two 

 distinct species of blackfish occurred on the east coast of the United 

 States, and in 1876 he was enabled to demonstrate the validity of his 

 opinion by the acquisition of a complete female specimen from Delaware 

 Bay. This specimen, with the skull formerly referred to as " Globio- 

 eephalus "? n. sp.," became the basis of his Globioeephalus brachi/pterns. 



Recently, as already stated on a previous page, the Smithsonian 

 Institution has received tbree skeletons and an additional skull, which in 

 the opinion of the writer may undoubtedly be referred to the species 

 under consideration. Two of these skeletons and the extra skull were 

 obtained by Mr. Joseph Willcox in Osprey, Fla., and the third skel- 

 eton came from the U. S. Life-Saving station at Dam Neck Mills, near 

 Cape Henry, Virginia. The Florida skeletons were respectively about 

 ]7 and 18 feet long, and the Virginia specimen (a male) measured 15 

 feet 3 inches in the tlesh. The following external measurements were 

 taken from the Virginia specimen while fresh, by Mr. T. W. Scoilick : 



Measurements of blackfish, G. brachypterus, No. 22561, male, from Dam Neck Mills, 



Virqinia. 



Ft. In. 



Tip of snout to uotcb of flukes 1^ 3 



Tip of snout to blowhole 1 'H 



Tip of snout to eye 1 9i 



Tip of snont to anterior base of pectoral •' 



Tip of snout to anterior base of dorsal -^ lU 



Tip of snout to anus 1*^ ^ 



Tip of snout to penis - •* 2 



Length of pectoral, straight, from middle of base to tip 2 6 



Greatest breadth of pectoral ^^ 



Length of base of dorsal ''^ '^ 



Vertical height of dorsal 1 '•^ 



