TIIIC F()SS/L l{IS(tN OF NORTH AM KIUCA—LVCAS. 



leb 



Appended are the measurements of these compared with good exaiu- 

 l)le8 of B. bison and B. bonanus: 



MeaaurementH of mctacarpaJH. 



The terni Ice ClilllH of I*j.scliacholtz Jiay, oltcii given as tlie h)cality 

 for the fossil remains from Kot/ebue Sound, is a little misleading, since 

 the bones either occur in the stratum of more or less frozen soil above 

 the ice or in the talus at tiic foot of the blulfs. Cai)t. O. L. Hooper, who 

 obtained numerous specimens for the U. S. National Museum, blasted 

 olf considerable portions of the ice without iinding any bones therein.' 



MvaHurcmenIs of horn aoren of JHson oraHHioornw. 



' Part of lowor wide of horn corn laekin);. 



BISON ALLENI Marsh. 



(PliitoH I.XXVII-LXXX.) 



Bison allcni Mahsu, Am. ■)<mrii. Sci,, XIV, 1877, p. 252. 



lioH (r<imj>UmuH ( low., .Joiuii. Acad. Nat. Soi., IMiila., IX, \\. 450, pi. xxii, fifrH. 1-4. 



Type. — No. 911, Museum of Yale College. IMeistocene of Idaho and 

 Kansas.^ 



Horn cores long, slender, mu(;h curved, slightly fl;',tt<^ncd above at 

 base; transverse diameter (ionsiderably grcatci- than vertical; length 

 along upper curve mu(;h greater than circumlerence at base. Huon 

 alleni is distinguished from li. crasHicorniH by the much greater curva- 

 ture of the horn cores, tiuise being also more llattened and more ellip- 

 tical in section in crasfiicornis. Like crassicornifi this spcc^ies is distin- 



' For a <leHcri])tion of tbc^HO din's and :i diHciiHHion of their origin soo liiciiardHon, 

 Voyaj^o of tho Herald, pp. 1-8; Dall, l^uHotiii U. S. (iool. Snrv., 84; Cornd.ition 

 PajicrH, Neocene, pp. 2(i0-2t)8. 



^ThiH ajiocies was aHBigiic-d to the liowor I'liocoue by ProloHSor Marsh, but the spo- 

 cinieii found in the gravel by Professor Greene shows it to have been beyond doubt 

 Pleistocene. 



