298 



INDEX. 



TEKEBRATTLA Continued. 



pugnus 

 radialis 



TEREBUATULITES criatatua . 

 THAMMSCLS? sp. ?... ...... 



THECA priruordialia ........ 



THECI A i ainosa ............ 



TREMATOSPIRA ............. 



caiuura . . 



155 



220 



276 



218 



274 



23 



1O2 



151 



151 



infrequens 151 



gibbosa 151 



TRILOHITE, Supposed eggs of 211 



TniNLTLfcUS concentricus 273 



TRIPI.ESIA 75 



calrifera :i, 75 



TnopiDOLKPTfB carinatus 276 



UPPER HELDERBERO HORIZON of New York, Num- 

 ber of sperirs rciircscnting 7 



WHITE PINE SHALES H 



Straligrapliic. ])o.sii ion of .'i 



WIIITFIELUIA 14> 



tuniida 149 



AVIWOXBIX, Potsdam fossils of, occurring in Xcvada .'! 



XAPIIRKXTIS ? sji. ? 27::, 27!) 



ZAPIYCHIUB 263 



cai'bouaria 261,263 



ZOXITES (Connulus) Priscua 2C2 



ZYGOSPIRA Headi i :o 



