294 



INDEX OF GENERA AND SPECIES. 



Purpura attenuata, 75. 



canaliculata, 75. 



marginata, 75. 



lapillus, 75. 



ostrina, 75. 



petrosa, 112. 



saxicola, 75. 

 PYRINA, 276. 



. Parryi, 276. 

 Pyrula, 113. 



modest a, 113. 



Radiolites, 107. 



gregaria, 61, 107. 



Mortoni, 03. 

 RAN ELL A, 8, 73. 



Californica, 73. 



Mathewsonii, 8, 74. 



triquetra, 73. 



REMONDIA, 270. 



furcata, 270. 

 REPTESCHARELLA, 107. 



Heermannii, 107. 



plana, 108. 

 REPTESCHARELLINA, 108. 



cornuta, 108. 



disparilis, 108. 



Heerraannii, 108. 

 REPTOPORINA, 108. 



eustomata, 108. 

 Rhynchonella, 123, 204, 253. 



nitens, 123. 



peregrina, 204. 



Whitneyi, 204, 253. 



RlMELLA, 225. 



canalifera, 225. 

 simplex, 225. 



RINGICULA, 231. 

 varia, 231. 



RlNGINELLA, 174, 231. 



pinguis, 175, 231. 

 polita, 174, 231. 

 Rostellaria, 76, 225. 

 canalifera, 225. 

 indurata, 76. 

 simplex, 225. 



Sanguinolaria, 94, 238. 



Californica, 94, 124. 



Whitneyi, 238. 

 SAXICAVA, 116. 



abrupta, 116. 

 SAXIDOMUS, 58, 98. 



aratus, 58, 98. 



gibbosus, 58, 98. 



gracilis, 58, 98. 



Nuttallii, 58, 98. 

 SCALARIA, 78, 223, 261. 



bellastriata, 78. 



crebricostata, 78. 



Mathewsonii, 223. 

 . subcornata, 78. 



Texana, 261. 

 Scaphites, 210. 



ramosus, 210. 



SCHIZODESMA, 20, 91. 



abscissa, 20, 91. 

 ScMzopyga, 47, 74. 



Californica, 74. 

 SCHIZOTHCERUS, 91. 



Nuttallii, 91. 

 Sconsia, 223. 



tuberculata, 223. 



