242 



INDEX OF GENERA AND SPECIES. 



Eetzia compressa, 14. 



ElNGICULA, 112. 



Eingicula varia, 112. 



KOSTELLARIA, 128. 



Eostellaria canalifera, 123. 



simplex, 124. 

 EHYNCIIONELLA, Garb., 12; Trias., 



34; Jur., 39. 



Ebynchonella sequiplicata, 35. 

 gnathophora, 39. 

 lingulata, 34. 

 EHYNCOPTERIS, 31. 



Ehyncopteris obesus, 32. 



SCALARIA, 212. 



Scalaria Mathewsonii, 212. 

 SEFTIFER, 186. 



Septifer dichotomus, 186. 

 SILIQUA, 147. 



Siliqua Oregonensis, 147. 

 SOLEN, 146, 213. 



Solen Diegoensis, 213. 



parallelus, 146. 

 SPIRIFER, Garb., 13 ; Trias., 35. 



Spirifer Homfrayi, 35. 



lineatus, 13. 

 SPIRIFERINA, 14. 

 STRAPAROLLUS, 120. 



Straparollus lens, 120. 



paucivolvus, 120. 



TAPES, 169, 214. 



Tapes Conradiana, 169. 

 ? cretacea, 214. 

 quadrata, 169. 

 TELLINA, 155. 



Tellina Ashburnerii, 159. 

 Californica, 161. 

 decurtata, 158. 

 Hoffmanniana, 156. 

 Hornii, 160. 

 longa, 155. 



Tellina Matbewsonii, 158. 

 monilifera, 157. 

 ooides, 157. 

 parilis, 160. 

 ? quadrata, 159. 

 Eemondii, 156. 

 Whitneyi, 160. 

 TEREBRATELLA, 205. 



Terebratella obesa, 205. 

 TEREBRATULA, Trias., 34; Jur., 41. 

 Terebratula Humboldtensis, 



34. 

 TESSAROLAX, 126. 



Tessarolax distorta, 126. 

 TRAPEZIUM, 170. 



Trapezium carinatum, 170. 

 TRIGONIA, Jur., 48; Cret., 188. 

 Trigonia Evansii, 189. 



Gibboniana, 190. 

 pandicosta, 48. 

 Tryoniana, 188. 

 TRITONIUM, 94. 



Tritonium Diegoensis, 95. 

 Hornii, 94. 

 paucivaricatum, 95. 

 Whitneyi, 66. 

 TROCHOSMILIA, 207. 



Trochosmilia striata, 207. 

 TURNUS, 145. 



Turnus plenus, 146. 

 TURRILITES, 73. 

 TURRIS, 92. 



Turris Claytonensis, 92. 

 varicostata, 93. 



TURRITELLA, 131, 212. 



Turritella Chicoensis, 133. 



infragranulata, 21 2. 

 infralineata, 131. 

 robusta, 135. 

 Saffordii, 135. 

 seriatim-granulata. 



132. 



Uvasana, 134. 

 Veatchii, 133. 



