Plate XIX 





/- 



W 



y 



.3\ 



;•-..... + 



-Mia 



c^u. 





1 



/^ 



' •! / 



,'(> 





13 13a M 



m 





^v 



A. 



+ ^!^ 



Stages of Gitowrn in Silhktan Brachiopoda 



