. Maryland geological survey . MOLLUSCA PELECYPODA. PLATE LXIV. PAGE Figs. 1-6. Arca (Noetia) ponderosa Say 205 1. Interior of left valve. Wailes Bluff. 2. Exterior of right valve. Same locality. 3. Interior of same. 4. Exterior of left valve. 5. Interior of left valve of larger individual, same locality. 6. Exterior of same. Figs. 7-10. Arca (Scapharca) transversa Say 206 7. Interior of left valve. Wailes Bluff. X 2y2 8. Exterior of right valve. Same locality. X2y2 9. Interior of same. 10. Exterior of left valve. MARYLAND GEOLOGICAL SURVEY. PLIOCENE AND PLEISTOCENE, PLATE MOLLUSCA PELE


. Maryland geological survey . MOLLUSCA PELECYPODA. PLATE LXIV. PAGE Figs. 1-6. Arca (Noetia) ponderosa Say 205 1. Interior of left valve. Wailes Bluff. 2. Exterior of right valve. Same locality. 3. Interior of same. 4. Exterior of left valve. 5. Interior of left valve of larger individual, same locality. 6. Exterior of same. Figs. 7-10. Arca (Scapharca) transversa Say 206 7. Interior of left valve. Wailes Bluff. X 2y2 8. Exterior of right valve. Same locality. X2y2 9. Interior of same. 10. Exterior of left valve. MARYLAND GEOLOGICAL SURVEY. PLIOCENE AND PLEISTOCENE, PLATE MOLLUSCA PELECYPODA. PLATE LXV. PAGE Figs. 1-4. Nuctjla peoxima Say 207 1. Interior of left valve. Wailes Bluff. X 6 2. Exterior of right valve. Same locality. X 6 3. Interior of same. 4. Exterior of left valve. Figs. 5-8. Leda acuta (Conrad) 208 5. Interior of left valve. Wailes Bluff. X 5 6. Exterior of right valve. Same locality. X 5 7. Interior of same. 8. Exterior of left valve. Figs. 9-12. Yoldia limatula (Say) 209 9. Interior of left valve. Wailes Bluff. X 2 10. Exterior of right valve. 11. Interior of right valve. Same locality. X 2 12. Exterior of left valve. MARYLAND GEOLOGICAL SURVEY


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