C. abbreviata, C. californica, C. cardioides, C. caroliniensis, C. consobrina, C. difficilis, C. distincta, C. dutemplei, C. gravesi, C. incompta, C. lamberti, C. marylandica, C. mirabilis, C. nobilis, C. rhaetica, C. saincenyensis, C. veneriformis

C. albertensis, C. anomala, C. arnouldi, C. cretatcea, C. cuneiformis, C. cycladiformis, C. deperdita, C. forbesi, C. garumnica, C. gibbosula, C. huarazensis, C. intermedia, C. laletana, C. media, C. obliquata, C. obovata, C. obtusa, C. pisum, C. pulchara, C. pulchra, C. sirena, C. sirena, C. sirena, C. sirena, C. solitaria, C. suborbicularis, C. tellinella, C. valdensis, C. subtrigonalis, C. brongniarti, C. brongniarti, C. convexa, C. convexa, C. convexa, C. acuta, C. floridana, C. pompholyx

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