PLATE XXVI. 



PASE 



Fig. 22. Fusvs TUMIDUS. Magnified. 145 



Fig. 23. F. OCCIDENTALS. Magnified. 146 



Fig. 24. NEPTTJNEA (TRITOXOFUSUS) CRETACEA. 14G 



Fig. 25. N. MUCRONATA. Natural size. 147 



Fig. 26. PAL^EATRACTUS CRASSDS. Magnified. 148 



Fig. 27. STTRCULA PR^EATTENUATA. Natural size. 150 



Fig. 28, S. (StJRCULiTESj SINUATA. Natural size. 150 



Fig. 29. S. (SURCULITES) INCONSPICUA. Magnified. 151 



Fig. 30. HETEROTERMA TROCHOIDEA. Magnified. 152 



30 a. Top view, showing the posterior sinus. 



Fig. 31. BELA CLATHRATA. Magnified. 152 



Fig. 32. CORDIERA MITR.EFORMIS. Magnified. 153 



Fig. 33. TRITOKITJM CALIFORXICUM. Magnified. 154 



Fig. 34. TRACHYTRITOH TEJONENSIS. Natural size. 154 



Fig. 35. BRACHYSPHINQUS SINUATUS. Natural size. 156 



Fig. 36. BULLIA (MoLOPOPHORUs) STRIATA. Magnified. 157 



Fig. 37. TURBINELLA CRASsiTESTA. Natural size. 157 



