Plate XXXVII. 



Mono£ raph- O FSTjEE-IJVI) USTR F. 



Fig. 1. 



Vhx. 2. 



Fig. 3. 



Fig. 4. 



V\s. 5. 



Fiy-. 0. 



Fi«. 8. 



Fi«. y. 



Fit;. 10. 



PC. 6 



Fig. 12. 



rj. i 



Fig. 13. 



Fitr. 14. 



Fig. 15. 



Fig. 16. 



Figures of tUo egg of the oyster ami tlie .yomig oyster in progressive stages of gidwUi, illustrating the stndies of Dr. \V. K. Brooks 



[From the report of T. E. Ferjpison. comnjisaioner of fisheriea for ilarylsiiid.] 



