106 BULLEl'lN 36, UNITED STATES NATIONAL MUSEUM. 



8. SAGMATIAS. 



Sagmatias, Cope, Proc. Acail.Nat. Sci. Philadelphia, 1865, p. '294. 



This genus must be considered valid unless the clianicters given l>y 

 Professor Cope can be proven to be the result of age or individual vari- 

 ation. These characters are the elevation of the preinaxilhT", iniinedi- 

 ately in front of the superior nares and the thinning out of the lateral 

 free margin of the expanded i)ortion of the maxilliiB. Except in these 

 two characters the genus shows a close approximation to Lagenorhyn- 

 elms, with which I was at first inclined to unite it. 



The genus is based upon the single skull described by Professor 

 Cope under the name of S. amhlodon. It belonged to an aged individual, 

 as appears from the coalescence of the cranial elements and the blunt, 

 ness of the teeth, I^othing is known of its history, except that it was 

 captured at sea by the ship Vincennes, of the United States Exploring 

 Expedition. 



In size and proportion the skull resembles that of Lagenorhynchus 

 super ciliosus. The beak is more sharply pointed than is usual in that 

 genus. 



S\GMATIAS AMBLODON Cope. 



Sagmaiian amhlodon, Cope, Proc. Acad. Nat. Sci. Philadelphia, 1866, p. 294. 

 Tabic of measurements. 

 SAGMATIAS AMnLODON. 



^Caugbt at soa. United States Exploring Expediiiun. 



