A. r.-.i:: 



kru-IU rrut.l 



ventral |H.rtioii i> iniicli If-s j.nmiintMit. nfall these .lill'erences tin- nm-t 

 ;inl |M-rha| the only itii|.(r-taiit one i- the hist 



llninliti, ur 'AS it ^ll(lul(l now In- calif. I. h'r.iusflln anficnstirnsis .lones, 8p 

 represente*! as huving a much l.liiiiti-r ant.-rior outline. Init in tho Cincinnati finiia- 

 tion of (ihio and In-liana we have a species that comes much nearer, the anterior 

 end of the ri^ht vaht> UMH^ quite as nam.\\. only the most prominent point i- 



A.T ihlr.l.if il. i ihalem Minoeapo : Tn-iUmi 



n, llUools; BlfdMgw Unwtooe, 11 fb Brides Kentn 



