330 



PALEONTOLOGICAL INDEX 



Spatangidea, 232. 



Sphyraena speciosa, 111. 



Sphyrna, 109. 



Sphyrna denticulata, 110. 



Sphyrna prisca, 61, 74, 75, 110, 266. 



Spiroplecta americana, 235. 



Spiroplecta biformis, 236. 



Spiroplecta clarki, 66, 80, 81, 235, 314. 



Sqtialus auriculatus, 108. 



Strepsidura subscalarina, 59, 70, 74, 



75, 136, 274. 

 Strombidae, 145. 

 Synechodus, 102. 



Synechodus clarkii, 61, 74, 75, 103, 266. 

 Syrnola trapaquara, 156. 



T. 



Taeniog'lossa, 141. 



Tectibranchiata, 123. 



Tectospondyli, 98. 



Teleodesmacea, 160. 



Teleostomi, 110, 264. 



Teleotremata, 2C3. 



Tellina greg-gi, 166. 



Tellina subtriangularis, 167. 



Tellina virginiana, 59, 76, 77, 166, 285. 



Tellina Avilliamsi, 76, 77, 167, 285. 



Tellina (Ang-elus) virginiana, 168. 



Tellina (Peronidae) papyria (?), 76, 



77, 167 

 Tellina (Peronidia ?) williamsi, 167. 

 Tellinidae, 166. 

 Terebratellidae, 203. 

 Terebratula harlani, 61, 78, 79, 194, 20Ji, 



310. 

 Terebratulidae, 204. 

 Teredinidae, 160. 



Teredo virginiana, 76, 77, 160, 282. 

 Testndenata, 97. 

 Tetrabranchiata, 122. 

 Textularia abbreviata, 233. 

 Textularia hauerii, 233. 

 Textularia gramen, 63, 80, 81, 233, 314. 

 Textularia sagittula, 63, 80, 81, 23-'/, 



314. 

 Textularia subangulata, 61, 80, 81, 23-'i, 



314. 

 Textularidae, 233. 

 Thecachampsa antiqua, 96. 

 Thecachampsa contusor, 61, 74, 75, 96, 



262. 

 Thecachanip.sa marylandica, GO, 74, 75, 



96, 262. 



Thecachampsa sericodon (?), 61, 74, 



75, 95, 262. 

 Thecachampsa sp., 60, 74, 75, 95, 262. 

 Tornatella bella, 123. 

 Tornatellaea bella, 59, 66, 70, 74, 75, 85, 



86, 88, 123, 272. 

 Toxoglossa, 125. 

 Trigonoarca decisa var., 78, 79, 85, 88, 



195, 303. 

 Trigonoarca pulchra, 195. 

 Trigonoarca pulchra var., 195. 

 Trionychia, 97. 

 Trionychidae, 97. 



Trionyx Adrginiana, 61, 74, 75, 97, 263. 

 Tritonidae, 141. 

 Tritonium showalteri, 63, 76, 77, I4I, 



276. 

 Trochidae, 157. 

 Trochocyathus clarkeanus, 60, 62, 80, 



81, 225, 313. 

 Trochosmilia connivens, 229. 

 Trochus apertus, 152. 

 Trophon sublevis, 63, 74, 75, 85, 86,. 135, 



274. 

 Truncatulina boueana, 253. 

 Truncatulina g'rosserug'osa, 254. 

 Truncatulina lobatula, 80, 81, 251, 252, 



316. 

 Truncatulina refulgens, 252. 

 Truncatulina ungeriana, 59, 80, 81, 



253, 316. 

 Truncatulina variabilis, 253. 

 Truncatulina wuellerstorfi, 253. 

 Tiiba marj'landica, 76, 77, 155, 281. 

 Tubuliporidae, 205. 

 Tudicla marylandica, 63, 76, 77, 1S7, 



275. 

 Tudicla sp., 61, 62, 76, 77, 13S, 275. 

 Tudicla (?) sp., 76, 77, 138, 275, 276. 

 Ttirbinella pyruloides, 131. 

 Turbinolia a'cuticostata, 43, 62, 80, 81, 



223, 313. 

 Turbinolia elaborata, 229. 

 Turbinolia pharetra, 224, 225. 

 Turbinolia pileolus, 231. 

 Turbinolia wautubbeensis, 224. 

 Turbinolidae, 222, 223. 

 Tiirbonilla potomacensis, 63, 76, 77, 



155, 281. 

 Turritella humerosa, 60, 61, 64, 09, 71, 



72, 76, 77, 85, 86, 1J,8, 279. 

 Turritella mortoni, 60, 61, 62, 64, 6S, 69, 



72, 73, 76, 77, 85, 86, l.',7, 148, 149, 



278. 



