Plate 34 



Fig. 1. Sigmomorphina schwageri (Karrer). X 25. Miocene, Burdigalien 



inferieur, Le Coquillat, Leognan, France, a, b, side views; c, 



apertural view. 

 2, 3. Sigmomorphina semitecta (Reuss) var. terquemiana (Fornasini). 2, 



Miocene, Burdigalien inferieur, Moulin de I'Eglise, Saucats, France. 



X 65. 3, Pliocene, Castel Arquato, Italy. X 60. 

 4, 5. Sigmom,orphina undulosa (Terquem) . X 65. From Loi-d Bandon 



dredgings, off S.W. Ireland, a, b, side views; c, basal view. 

 6. Sigmomorphina lamarcki Cushman and Ozawa. X 45. Eocene, 



Lutetien, Campbon, France, a, b, side views; c, basal view. 



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