PLATE 60 



1,1a, lb. Corbula krebslana C. B. Adams. 6.1 mm. p. 67. 



2, 2a, 2b. Basterotia quadrata granatlna Dall. 10 mm. left ve.lve. p. 67. 



3,3a-3c. Corbula cubanlana Orblgny. IS. 7 mm. p. 67. 



4, 4a, 4b. Corbula dlsparills 0-^bigny. 9 mm. p. 67. 



5, 5a, 5b. Corbxila dietzlana C. B. Adams. 10.7 mm. p. 67. 



6, 6a, 6b. Corbula kjoeriana C. B. Adams. 12 mm. p. 67. 



7,7a. Corbula cymella Dall. 13.5 mm. p. 67. 



870 



