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Figure 57. American Turret and Mangelia Shells. ATLANTIC: a, Kurtziella li?no?iitella Dall, % inch; b, hiodrillia aepynota Dall, % inch; c, Genmmla perisce- lida Dall, 2 inches; d, Moiiilispira leiicocyma Dall, % inch; e, Ancistrosyrinx radiata Dall, ^ inch; f, Cerodrillia thea Dall, % inch; g, Genota viabrunnea Dall, 2 inches; h, Gymnobela blakeana Dall, ^ inch; i, Ma?igelia morra Dall, % inch; j, Crassispira ebenina Dall, % inch; k, Mangelia corbicida Dall, % inch. PACIFIC: 1, Mitromorpha filosa Cpr., % inch; m, Mitromorpha aspera Cpr., % inch.