10 species cited in:
Maynard, C. J. 1925 [July 18]. Contributions to the history of the Cerionidae with descriptions of many new species and notes on evolution in birds and plants. Records of Walks and Talks with Nature, Appendix to Volume 10. Number 11: 171-194, text figs. 95-103, Maps 2-4, pls. 40-41.
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