EXPLANATION OF PLATES. 



PUflTE 21. (CONTINUBD.) PAGE 



TEMNOCHILUS? Sp? 59 



FIG. 17. — The specimen shows septa, siphuncle and 

 chambers. 



TEMNOCHILUS COXANUM, M. and W. Sp. Rowley. 60 



FIG. 18. — Smaller end view to show position of the si- 

 phuncle and outline of the shell. 

 FIGS. 19-20. — Dorsal and lateral views respectively of 

 the same specimen. 



GRAMMYSIA? IMBRICATA. Rowley. 60 



FIGS. 21-22. — Top and side views of a valve. 



CRANIA MODEST A, W. and St. J. Sp. Rowley, 60 



FIGS. 23-24. — Two views of the upper valve of a fine 

 specimen attached to the broachial valve of a 

 Seminula argentea. 



CRANIA DELICATA, N. Sp. (Rowley.) 60 



FIG. 25. — Two under valves attached to the convex 

 surface of Productus tenuicostus. 



CRANIA? LEMONI. N. Sp. (Rowley.) 61 



FIG. 26. — A group of these little shells attached to t^e 

 pedicel valve of Productus semireticulatus x2. 



SCAPHIOCRINUS? LONGITENTACULATUS, N. Sp. (Rowley.) 61 



FIG. 27. — View of the type specimen as seen on the slab. 



All the figures on this plate are drawn natural size, 

 except 26, which is two diameters. 



