GLOBICEPHALUS BRACHYPTERUS. 139 



GLOBICEPHALUS SCAMMONI Cope. 

 GloUocephaliis Scamnioni, Cope, Proc. Acad. Nat. Sui. Pliila., 1889, p. 21. 



Tilis species was luaile known by Professor Cope from tbe descrip- 

 tiou, meiisiireinents, and drawings of Scamraon. 



There is in tbe national collection a sknll presented by Scaramon 

 which is presnmably the type of the species. This sknll I have com- 

 pared with those ofG. brachijpterus, and, as already stated, have reached 

 the conclusion that the differences observable indicate specific distinc- 

 tions between the blackfish of the east and west coasts. 



Scammon's measnrements of the exterior also differ from those 

 obtained from specimens from the east coast. These differences will 

 be pointed ont when treating of G. hrachyypterus. 



GLOBICEPHALUS BRACHYPTERUS Cope. 



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



Globiocephaliis brachi/ptenis, Cope, Proc. Acad. Nat. Sci. Pliila., 1876, p. 129. 



As early as 1866 Professor Cope entertained the opinion that two 

 distinct species of blackfish occurred on tbe 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- 

 cepbalus ? u. sp.," became the basis of his Globiocephalus brachi/ptenis. 



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

 Institution has received three 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-Savin g station at Dam Neck Mills, near 

 Cape Henry, Virginia. The Florida skeletons were respectively about 

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

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

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



Measurements of hIacJcftsh, G. brachi/pterus, No. 22561, male, from Dam Ncclc Mills, 



Firqinia. 



Ft. In. 



Tip of snout to notch of flukes l-^ ^ 



Tip of snout to blowhole 1 ''i 



Tip of snout to eye ^ 1 9i 



Tip of &nont to anterior base of pectoral -^ 



Tip of snout to anterior base of dorsal 3 IH 



Tip of snout to anus 1*^ ** 



Ti^} of snout to penis -^ 2 



Lengtb of pectoral, straight, from middle of base to tip 2 b 



Greatest breadth of pectoral ^^ 



Length, of base of dorsal 2 7 



Vertical height of dorsal 1 "'^ 



