PUTE 10. ^ 



Fig. 1. 66. 1. MoDioLA OBTCSA. (Pag. 40.) 



Tig. 2 a, b. 67. 2. Mukchisonia? angustata. (Pag. 41.) 



Fig. 3. 68. 3. MuRCHisoNiA ventricosa. (Pag. 11.) 



Fig. 4. 69. 4. Mukchisonia perangdlata. (Pag. 41.) 



Fig. 5. 71. 1. Natica? (Species undetermined). (Pag. 42.) 



^ 



Fig. 6. 72. 5. Pleorotomaru ? nucleoi-ata. ( Pag. 42.) 



^ 6 a. Natural size of spacimen. 6 6. Enlarged view of the same. 



Fig. 7. 70. 5. MuRCHisoNiA? varicosa. (Pag. 42.) 



7 a. A specimen having the surface much worn and weathered : the markings are but partially visible. 

 7 b. Ldngitudioal section of a specimen of the same shell. 



Fig. 8. 73. "B. PlEUROTOMARIA QHADRICARINATA. (Pag. 43.) 



Fig. 9. 74. 7. PLEtraoTOMARiA umbilicata. (Pag. 43.) ™ 



9 a. Lateral view of a cast of this species, the spire partially obliterated. 



9 b. View of a larger specimen, showing but a single angle upon the cast, the upper one having been oblite- 

 rated. 



9 e. View of the upper side of a smaller specimen. 



9 d. Lateral view of a specimen much compressed. 9 e. Lower surface of the same, showing the 



umbilicus and the striae upon the shell, which is partially preserved. JIK^ 



9 g. View of the upper side of a crushed specimen. 9 h. Lower side of a small specimen. ' "' 



Fig. 10. 76. 8. Pleurotoharia ? nodclosa. (Pag. 44.) % 



Fig. 11. 76. 9. Pleurotomaria ? obsoleta. (Pag. 44.) 



Fig. 12. 77. 1. CYTHEAVnii. (Species undetermined). (Pag. 44.) ^I|r 





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