898 THE JOHN DAT FAUNA. 



orifice is rather narrow and its border presents a median point posteriorly, 

 which separates two deep concavities, about as in T. coryphaeus. 



Measurements of palate, etc. 



M. 



Length from premasillary border to nares 072 



Width of dental series, including canines 0G5 



Length of canine tooth 020 



Long diameter of canine at base U07 



Li'iigth of premolar series >. 0:l9 



Length of sectorial — 013 



Width of sectorial in front 008 



Elevation of sectorial in front 008 



T-,. . J- j; i i 1 1 5 anteroposterior 010 



Diameters of first tubercular i ' 



transverse 014 



Diameters of second tubercular \ ^ 



< transverse 009 



■Width between bases of canines 017 



Width between sectorials posteriorly 041 



Width between third tuberculars 023 



Width of nares 012 



The third or Oregon specimen agrees closely with the one just de- 

 scribed. The crowns of its superior incisors are preserved, so that it can 

 be seen that they are obspatulate with angular extremities, and are not 

 notched, as in Galecynus geismarianus and various living species. 



The best ascertained characters of this species, then, as compared with 

 the A vetits, are (1) the much smaller tubercular molars in both jaws ; (2) 

 the strongly double tubercular character of the heel of the inferior sectorial 

 as compared with the tendency to a single keel seen in the A. vetiis. 



Dedicated to my friend Prof. Henry Hartshorne, formerly of Haverford 

 College, Pennsylvania. 



Amphicyon cuspigerus Cope. 



Bulletin U. S. Geol. Survey Terrs., vi, p. 178. 



Canis cuspigerus Cope, Paleoutological Bulletin No. 30, p. 8, December 3, 1878. Proceedings American 

 Philosoph. Society, 1878, p. 70. Amphicyon entoptychi Cope, Paleoutological Bulletin No. 31, p. 

 3, December 24, 1879. Proceedings Amer. Philosoph. Soc, 1879, i>. 372. 



Plate LXVIII; figs. 1-4. 



This species is considerably smaller than the A. hartshorniamis, and 

 intermediate in size between the Galecyni geismarianus and gregarius. It is 

 represented in my collection by two crania, one nearly perfect and with the 

 mandible attached ; the other with its superior portions crushed and with- 

 out incisive region or lower jaw. 



