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macrodon, Saxicava . . . 345 



Venus 109,116, 358 



macrophylla, Chama 226 



macroptera, Avicula 261 



macroschisma, Anomia 315 



Placuanomia 315 



Mactra abbreviata . 31 



achat ina 34 



alata ..... .... • . 29, 340 



alba 31, 340 



arctata • 39 



a&persa 33 



australis 30,32,38, 340 



baysii . . 42 



bieolor . . 34 



brasiliana 31, 340 



byronensis , 35 



campe chens is 27 



carinata 29 



castanea 31 



cinerea 29 



complanata 28 



coral lina ....... 31 



crassatella 32 



cuneata 34 



cygnea .33 



cygnus ..... 33 



dealbata 32 



deaurata 39 



ctenticulata 39 



depressa 32 



discors 33 



donacia 32, 38 



douaciformis 34 



edulis • 35 



elegans . . . 33, 340 



elongata 33, 340 



