INDEX 



Page numbers referring to descriptions 



Accessions, 874-7P 



Acervularia (?)^inequalis, 1117, 1125, 



1126, 1128. 

 Acidaspis tuherculata, 1191/1 1197, 



1208 



Acrotreta baileyj, 941. 



cf. belli, 938. 941. 



bisecta, 938, 941. 

 Actinopteria 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. 



of fossils are printed in black face type. 



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. 

 Beachiasuessana, 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. 

 Bellerophon sp., 994, 1117. 



auriculatus, 1119, 1124, 1127. 1128. 



maera. 993. 



