PLATE 10. 



Fig. 1. 66. 1. MoDioLA OBTUSA. (Pag- 40.) 



Fig. 2 a, ft. 67. 2. Murchisonia? angustata. (Pag. 41.) 



Ficr. 3. 68. 3. Murchisonia ventricosa. (Pag. -H.) 



Fi<r. 4. 69. 4. Murchisonia perangulata. (Pag. 41.) 



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



Fig. 6. 72. 5. Pleurotomaria ? nucleolata. (Pag. 42.) 



, da. Natural size of specimen. 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 : tlie markings are but partially visible. 

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



Fiir. 8. 73. <}. Pleurotomaria quadricarinata. ( Pag. 43.) 



Fig. 9. 74. 7. Pleurotomaria umbilicata. (Pag. 43.) 



'J a. Lateral view of a cast of this species, tlie spire partially obliterated. 



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

 rated. 



V) c. View of the upper side of a smaller specimen. 



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



umbilicus and the striic upon the shell, which is partially preserved. 



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



Fig. 10. 75. 8. Pleurotomaria? nodulosa. (Pag. 44.) 



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



Fig. 12. 77. 1. CvTUERiHA {Species UTidetertnitied). (Pag, 44.) 



