2IO BuLIvETiN 31 SIIO 



PIvATE 9 

 Figure I'age 



I -6. Ostrea sellceformis var. lisbonensis Harris 12 



About natural size ; showing thick, heavy shell and Avicu- 

 loid form ; Chestnut, L,a. St. Maurice stage. 



7. O. sellcsforjms v&x. divaricata l^&s. 12 



From Newton, Miss. 



(^ 8. O. sell(Tformis vax. vermilla (\q Gn&g 12 



Bienville Parish, Iva. 



