PLATE 62. 



32S 



Fig. 1-5. Platvceras calaxtica. 



1. View of the upper side of tlie spire of a specimen where the apex is entire. The shell is 



nearly all exfoliated from the body of the specimen. 



2. A similar but less symmetrical specimen, preserving little of the shell. 

 8. Anterior view of fig. 1. 



4. View of the upper side of the spire of a smaller specimen, in which the apex is broken off. 



6. A smaller specimen of, apparently, the same species, having the apex broken off and the 

 shell compressed from above. 



Fig. 6 & 7. Platyceras obesum. 329 



6. Lateral view of the specimen, from which the shell is nearly all exfoliated. 



7. A portion of the peristome, from which the upper part of the shell has been worn away, 



showing the plications. 



P'ig. 8 & 9. Edriocrinus saccilus? 143 



8. Lateral view of an extremely elongate specimen. 



9. A'iow showing the interior. 



These same figures are given on Plate i.xxxvii, fig. Id & 20. 



