676 JAMES L. KELLOGG 
BAN 
H aias\\\ : RQ Aw yrs 
: > YYW aie" / 
a ha ite Sen 
Fig. 48 Ostrea virginica; a, adductor muscle; e, union of mantle and epi- 
branchial chambers on the right side; ga, ga, lines of gill attachment; h, heart; 
m, mantle wall; p, inner palp; between x and y waste is expelled from mantle 
chamber. 
