INDEX OF GENERA AND SPECIES. 



Action, 142. 



Actagon impressus, 142. 

 ACTiEONINA, 113. 



Actseonina Californica, 114. 

 pupoides, 113. 

 Amauropsis, 109. 



Amauropsis alveata, 110. 



oviformis, 109. 

 Ammonites, Trias., 24; Cret., 60. 

 Ammonites Ausseanus, 25. 

 Batesii, 67. 

 Billingsiamis, 26. 

 Blakei, 24. 

 Brewerii, 62. 

 Chicoensis, 68. 

 complexus ?, 69. 

 (?) Cooperii, 69. 



Haydenii, 62. 

 Hoffmannii, 65. 

 Homfrayi, 26. 

 Newberryanus, 61 

 Peruvianus, 63. 

 ramosus, 65. 

 Bamsaueri, 27. 

 Bemondii, 66. 

 subtricarinatus,60 

 Traskii, 63. 

 Anatina, 150. 



Anatina inequilateralis, 151. 

 (?) lata, 151. 



Tryoniana, 150. 



Ancillaria, 100. 



Ancillaria elongata, 100. 

 Ancyloceras, 78. 

 Angaria, 121. 



Angaria ornatissima, 121. 

 Anisomyon, 142. 



Anisomyon Meekii, 142. 

 Anomia, 203. 



Anomia lineata, 203. 

 Anthonya, 181. 



Anthony a cultriformis, 182. 

 Aporriiais, 127. 



Aporrbais angulata, 128. 



Californica, 128. 

 exilis, 129. 

 falciformis, 127. 

 Arca, 193. 



Area Breweriana, 193. 

 decurtata, 195. 

 gravida, 194. 

 Hornii, 194. 

 Architectonica, 116. 



Arcbitectonica cognata, 117. 

 Hornii, 117. 

 inornata, 118. 

 Veatcbii, 116. 

 Asaphis, 154. 



Asapbis undulata, 154. 

 Astarte, Juras., 50; Cret., 178. 

 Astarte Conradiana, 178. 

 Matbcnvsonii, 179. 

 (237) 



