10(3 BULLETIN 3G, UNITED STATES NATIONAL MUSEUM, 



8. SAGMATIAS. 



Sagmatias, Cope, Proc. Acad. Nat. Sci. Pliila(lel])hia, ISGK, p. "294. 

 This genus must be considered valid unless the cliaracters given by 

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

 ation. These characters are the elevation of the preniaxillaj immedi- 

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

 free margin of the expanded portion of the maxilla?. Except in these 

 two characters the genus shows a close approximation to Lagenorhyn- 

 chns, 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, 

 uess of the teeth. Nothing is known of its history, except that it was 

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

 Expedition. 



In size aiul proportion the skull resembles that of Lagenorhynclms 

 superciliomis. The beak is more sharply pointed than is usual in that 

 genus. 



SAGMATIAS AMBLODON Cope. 



Saamatlas amhhdon. Cope, Proc. Acad, Nat. Sci. Philadelphia, 1866, p, 294. 

 Table of measurements. 

 SAGMATIAS AMRLODOX. 



*■ Gaugbt at sea. United States Exploring Expediiiuii. 



