INDEX 



Page numbers referring to descriptions of fossils'are printed in black fa.ce type. 



Accessions, 874-76. 

 \cervularia (?) inequalis, 1117, 1125, 



1126, 1128. ' 

 Acidaspis^rtuberculata, 1191, 1197, 



1208. 

 Acrotreta baileyi, 941. 



c/.belti, 938,941. 



bisecta, 938, 941. ■ 

 Aetinopteria arenaria, 1202, 1203, 

 1208. 



textilis, 1188, 1191, 1208. 

 Agelacrinites, 994. 

 Albany county, mastodons, 929-30. 

 Allerisma?n.sp., 994, 995. 

 Ambocoelia, 905-6, 1203. 



sp. nov., 1203, 1207. 



umbonata, 905, 906, 1018. 

 mut. pluto, 905-6. 



explanation of plate, 1242. 

 mut. pygmaea, 905. 



explanation of plate, 1242. 

 var. gregaria, 905. 

 Ami, cited, 951. 

 Ampycidae, 946. 

 Anastrophia verneuili, 1056, 1059, 



1189, 1197,1203, 1207. 

 Angola shales, exposures, 1029. 

 Annelida, 1081, 1234. 

 Anoplia nucleata, 1191, 1203, 1207. 

 Anoplotheca acutiplicata, 1207. 



concava, 1191, 1207. 



flabellites, 1207. 

 Aphrodite, 1234. 

 Arenicolites, 993. 

 Asaphidae, 942, 946. 

 Ashburner, C. A., cited, 979. 

 Aspidocrinus scutelliformis, 1191, 1193, 



1206. 

 Ast, Philip, lithographer, 871 ; memo- 

 rial tribute to, 872-73. 

 Athyris angelica, 990, 992, 993. 



cora, 992. 



polita, 995. 



Atrypa lamellata, 1044, 1049. 



reticularis, 861, 1054, 1055, 1056, 

 1060, 1061, 1064, 1070, 1117, 1118, 

 1119, 1126, 1128, 1146, 1148, 1150, 

 1151, 1173, 1183, 1189, 1191, 1193, 

 1197, 1205, 1207. 



spinosa, 1204, 1207. 

 Atrypina imbricata, 1189, 1191, 1207. 

 Aulopora, 1006, 1017. 



sp., 1203. 



sp.?, 1206. 

 Aviculopecten?, 992, 995. 



sp.?, 992, 993, 995. 



cancellatus, 992. 



duplicatus?, 993. 



patulus, 994. 



rectirostra, 1203, 1208. 



rugaestriatus, 992. 



spinulifer (?), 1057. 



tenuis, 993. 



Bactrites, 915-16, 1014. 



.sp. mut. parvus, 916. 



explanation of plate, 1248. 



sp. mut. pygmaeus, 915. 

 explanation of plate, 1246. 

 Barkentin, George S., draftsman, 871. 

 Barrande, cited, 1081, 1108. 

 Barrett, S.T., cited, 1149. 

 Beachia suessana, 1202, 1203, 1208. 

 Becraft limestone, 1060-63, 1064; 



thickness, 1034; exposures near 



Rondout, 1191-93, 1219, 1221, 



1222, 1223, 1224, 1225; fauna. 1193. 

 Becraft mountain, stratigraphy. 862- 



63, 1030-79; topographic map of 



area, 863; geologic maps, 1032; 



tectonic features, 1071-79. 

 Becraft region, strata, 1034. 

 Beecher, C. E., cited, 925, 932, 1045, 



1108; mentioned, 1033. 

 Bellerophons/)., 994, 1117. 



auriculatus, 1119, 1124, 1127. 1128. 



maera, 993. 



