PLATE LXXXV. 



PAGE 



Figs. 1, 2. IsocARDiA iGXOLEA n. sp 318 



1. Exterior of riglit valve. Cove Point? 



2. Interior of left valve of same individual. 



Figs. 3, 4. IsocARDiA FRATERNA Say 317 



3. Exterior of right valve. Jones Wharf. 



4. Interior of left valve. Same locality. 



