PLATE XXVIII. 



Fig. 199, a. Section of Volution of AMMONITES NEWBERRYANUS. 



Fig. 200. HBLICOCERAS DECEIVE. Natural size. 



Fig. 200, a. " " " 



Fig. 201. TTJRRILITES. Sp. indet. Natural size. 



Fig. 202. Fusus ARATUS. Magnified. 



Fig. 203. CORDIERA MICROPTYGMA. Magnified. 



Fig. 204. Fusus KINQII. Natural size. 



Fig. 205. F. CALIFORNICUS. Natural size. 



Fig. 205, a. Id. Magnified view of the surface. 



Fig. 206. F. (HEMIFUSUS) HORNII. Natural size. 



Fig. 206, a. Id. Magnified view of the surface. 



Fig. 207. F. (H.) COOPERII. Natural size. 



Fig. 208. TRITONIUM HORNII. Magnified. 



Fig. 209. T. PAUOIVARICATUM. Magnified. 



Fig. 209, a. Id. Magnified view of body volution. 



Fig. 210. T. WHITNEYI. Natural size. 



Fig. 210, a. Id. Magnified view of body volution. 



Fig. 211. BUCCINUM LIRATUM. Natural size. 



Fig. 212. PSEUDOLIVA VOLUT.EFORMIS. Natural size. 



Fig. 213. FASCIOLARIA SINUATA. Natural size. 



Fig. 213, a. Id. Magnified view of body volution. 



Fig. 214. F. lo. Natural size. 



Fig. 215. MITRA CRETACKA. Magnified. 



Fig. 216. WHITNEYA FICTJS. Slightly magnified. 



Fig. 218. LUNATIA NUCIFORMIS. Natural size. 



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