688 



NORTH AMERICAN INDEX FOSSILS. 



112. Schuchertella inaequalis, L, a, b, e 



113. S. crenistria, X, a, b, e 



114. Orthothetes koekuk, L, d, e 

 *i25. Chonetes setigerus, L, b 

 *i27. C. aurora, L, d 



128. C. logani, L, b, d 



129. C. illinoisensis, L, b, d 



136. Chonopectus fischeri, L, a, c, d 

 *i42. Productella speciosa, L, b, d 



143. P. arcuata, L, b, d 



144. P. pyxidata, L, d 



145. P. shuniardana, L, b, d 



146. P. concentrica, L, b, d 



147. Productus Isevicosta, L, d, e 



148. P. burlingtonensis, L, d, e 



149. P. biseriatus, M, c, d 



150. P. marginicinctus, M, d 



151. P. fasciculatus, TJ, a, b, c, d, e 

 *iS2. P. semireticulatus, L, a, b 

 *20i. Rhipidomella thiemei, L, d 



202. R. michelini, L, a, b, c, e 



203. R. burlingtonensis, L, d 



204. R. dubia, M, c, d 



212. Schizophoria swallovi, L, d 



238. Camarophoria subcuneata, M, b, d 



*256. Camarotoechia sappho, L, b 



♦257. C. contracta, L, b 

 258. C. sageriana, L, b, c 



276. Pugnax striatocostata, L, d 



277. P. grosvenori, M, c, d 



281. Rhynchopora pustulosa, Li, d, e 



282. Rhynchonella eurekaensis, M, d, e 



283. R. hubbardi, L, b 



297. Dielasma turgidum, M, b, d 



322. Cyrtina acutirostris, L, d 



323. Cyrtia alta, L, b 



*324, Spiriferina spinosa, TJ, c, d, e 

 *362. Spirifer subattenuatus, L, b 



363. S. keokuk, L, b, d, e 



364. S. centronatus, L, b, e 



365. S. marionensis, Li, b, d 



366. S. grimesi, L, a, d 



367. S. neglectus, L, d, e 



368. S. logani, L, c, d 



369. S. leidyi, M, c, d, e 



370. S. increbescens, TJ, c, d 



377. Reticularia cooperensis, "L, c, d 



378. R. pseudolineata, L, d 



379. R. setigera, TJ, c, d, e 

 382a. Martinia contracta, TJ, d 



383. Syringothyris carteri, L, b, d, e 



384. S. texta, L, b, d 



396. Eumetria marcyi, M, TJ, c, d, e 



414. Athyris lamellosa, L, b, c, d, e 



415. Cliothyris roissii, X, b, c, d, e 



416. C. hirsuta, M, L, c, d, e 



417. Seminula subquadrata, TJ, b, c, d, e 



418. S. trinucleus, M, c, d 



Pelecypoda. 



6. Sanguinolites aeolus, L, b, e 



29. Grammysia hannibalensis, L, b, 



d, e 



36. Cardiopsis radiata, L, d 



43. Edmondia burlingtonensis, L, b, d 



*44. E. aspinwallensis, e 



*73. Nucula houghtoni, L, b 



91. Palaeoneilo marshallensis, L, b 



*92. P. sulcatina, L, b 



*94. Leda diversa, L, b 



95. L. pandoriformis, L, b 



*g6. L. bellistriata, L, b, c 



*i04. Parallelodon hamiltoniae, L, b, e 



*io5. P. tenuistriatus, L, b 



*io6. P. obsoletus, M, d 



*i92. Mytilarca fibristriata, L, b, d 



245. Myalina sancti-ludovici, L, c, d 



246. M, keokuk, L, d, e 



247. M. angulata, L, d 

 *248. M. congeneris, e 



*32i. Schizodus quadrangularis, L, b 



322. S. medinaensis, L, b 

 *323, S. cuneatus, e 



339. Aviculopecten caroli, L, b, d 

 *364. Crenipecten winchelli, L, b 

 *392. Pecten aviculatus, L, b, e 



451. Sphenotus aeolus, L, b 

 *48i. Cypricardella bellistriata, L, b 



482. C. oblonga, M, c, d 



486. Cypricardinia consimilis, L, b 



Gastropoda. 

 24. Lepetopsis levettii, M, c 

 47. Oxydiscus cryptolites, L, b, d 

 *58. Bellerophon sublsevis, M, TJ, b, d 

 68. Bucanopsis textilis, M, d 



78. Porcellia crassinoda, L, d 



79. P. nodosa, L, d 



137. Mourlonia mississippiensis, L,b, d 

 *i39. Bembexia sulcomarginata, L, b 



