INDEX 



Page numbers referring to descriptions of fossils are printed in black face 

 type. The superior figures tell the exact place on the page in ninths, e. g. i88' 

 means page i88, beginning in the third ninth of the page, i. e. about one third 

 of the way down. 



Accessions to paleontologic collec- 

 tions, 23'-27'. 



Acidaspis sp., I49^ 



Actinoceras, 33f. 

 abnorme, 332^- 



figure, 332. 

 bigsbyi, 332''. 



Actinopteria arenaria, 198*. 



communis, 143', 146", 205', 223', 



256^ 266. 

 textilis, 146', 185', 187', I88^ 226', 



227^ 256", 266. 



arenaria, 185*, 188", 189', 189', 

 227', 256'-57\ 266. 



Actinozoa, 235", 262. 



Agassiz, Alexander, cited, 190^, 191". 



Ambonychia sp., 160'. 



Ami, H. M., cited, 139*, 140*. 



Ampyx hastatus, 157*, I57\ 158'. 



Anodontopsis, 161'. 



aA.noplia nucleata, 145*. 



Aspidocrinus scutelliformis, igy^. 



Atractites, 328'. 



Atrypa sp., 2091 



reticularis, i8i^ 183^ 187", I93\ 

 195^ 200^ 207-, 207*^, 21 1^ 211^, 

 211'*, 2I7^ 218^ 230', 230^ 231', 

 231', 232', 233', 246', 263, 348', 

 351', 352% 353^ 354*, 354\ 355% 

 355', 356'. 



Atrypina imbricata, 183', 196^ I99^ 

 223^ 224^, 246^, 263. 



Aulopora sp., I42^ 



Aviculopecten incrassatus nov., 1461 

 perceus nov., 146*. 



Baltoceras, 336', 337"- 

 Barkentin, William S., appointment 

 as lithographer, 21'. 



Barrande, J., cited, 153', 301', 333*, 



339'. 

 Barrett, S. T., cited, 175', 176', 180', 

 184', 227', 231', 246^ 269'-, 344'; 

 acknowledgments to, 26o^ 

 Bassler, R. S., cited, 204-. 

 Bather, F. A., cited, 302', 302', 318', 



319', 323', 327', 340'. 

 Beachia amplexa nov., 143^ 146*. 

 suessana, 185', I86^ 187', I89^ 198% 

 220", 226', 226", 227', 228', 245',. 

 263. 

 immatura, 20i\ 204'. 

 Becraft limestone, 179^ i83'-84*, 193', 

 194^, 195', 197*, 200', 202\ 203*, 212', 

 I 226', 232'. 



Becraft mountain, fossils, 191^. 

 I Beecher, C. E., cited, 177', 248°, 269', 

 ' 269^ ; acknowledgments to, 280^ 



Beekmantown formations of Lake 

 i Champlain basin, 6^-7^; fauna, 15^- 



! Bell, Robert, cited, 139*. 

 Bellerophon, 161'. 



auriculatus, 355^ 



gaspensis nov., 146^. 



plenus, I46^ 

 Bentie limestone, 356^ 

 Beyrichia, i8o^ 181^, 216^ 



sp., 209^ 209', 216^, 268, 352". 



manliusensis, 209^ 213*, 214^ 214*,. 

 215^ 215', 215^, 221^ 221', 268. 

 Bidwell's crossing, fossil trails at, 18'- 



20^ 

 Billings, Elkanah, cited, 139^ 140^ 



141', 151'. 

 Bilobites varicus, 196*, 207®, 219°, 263. 

 Binnewater quartzites, 346\ 

 Blake, J. P., cited, 327^, 340^ 



