INDEX OF GENERA AND SPECIES. 



241 



Nassa, 97. 



Nassa antiquata, 97. 

 cretacea, 97. 

 Natica, 212. 



Natica Uvasana, 212. 

 Naticina, 109. 



Naticina obliqua, 109. 

 Nautilus, Trias., 19 ; Cret., 59. 

 Nautilus multicameratus, 20. 

 Texanus?, 59. 

 Wkitneyi, 19. 

 Ne^era, 153. 



Nesera dolabrseformis, 153. 

 Neptun^a, 88. 



Neptunsea curvirostris, 88. 

 gracilis, 90. 

 Hoffmanii, 90. 

 perforata, 89. 

 ponderosa, 88. 

 supraplieata, 89. 

 Nerinea, 113. 



Nerinea dispar, 113. 

 Nerita, 137. 



Nerita cuneata, 137. 

 deformis, 137. 

 Neverita, 108. 



Neverita secta, 108. 

 Niso, 116. 



Niso polita, 116. 

 Nucula, 198. 



Nucula truucata, 198. 



Olivella, 100. 



Olivella Mathewsonii, 100. 

 Orthis, 10. 

 Orthoceratites, 19. 



Orthoceratites Blakei, 19. 

 Ostrea, 204. 



Ostrea Brewerii, 204. 



malleiformis, 204. 



Panop^a, Trias., 28; Cret., 148. 



PAL. VOL. I. — 31 



Panopsca concentrica, 148. 

 Remondii, 28. 

 Patella, 140. 



Patella. Traskii, 140. 

 Pecten, Trias., 33. ; Jur., 46; Cret., 

 200. 

 Pecten acutiplicatus, 46. 

 Califoraicus, 201. 

 deformis, 33. 

 operculiformis, 201. 

 Traskii, 200. 

 Perissolax, 91. 



Perissolax Blakei, 92. 



brevirostris, 91. 

 Pharella, 147. 



Pharella alta, 147. 

 Pholadomya, 152. 



Pboladomya Brewerii, 152. 

 nasuta, 152. 

 Pinna, 188. 



Pinna Brewerii, 188. 

 Placunanomia, 217. 



Placunanomia inornata, 217. 

 Plicatula, 203. 



Plicatula variata, 203. 



POSIDONOMYA, 32. 



Posidonomy a Daytonensis, 32. 



Stella, 32. 

 Potamides, 130. 



Potamides diadema, 130. 



tenuis, 130. 



Productus, 11. 



Productus semireticulatus, 11. 



PSEUDOLIVA, 99. 



Pseudoliva lineata, 99. 



volutfefbrmis, 99. 

 Ptychoceras, 74. 



Ptychoceras a3quicostatus, 74. 

 quadratus, 74. 

 Pugnellus, 124. 



Pugnellus bamulus, 124. 



manubriatus, 125. 



Retzia, 14. 



