Omphalotropis zebriolata, Mousson.

Mousson, Journ. de Conch., xiii,, 1865, p. 181, pl. xiv., fig. 11;xxi, 1873, p. 108; Garrett, Proc. Zool. Soc, 1887, p. 308.

Omphalotropis rotumana, Smith, Ann. Mag. Nat. Hist., (6). xx., 1897, p. 552.

Abundant under sticks and stones on the main islet of Funafuti. It had already been found here by Graeffe, who also observed it at Nukufetau, Vaitupu, and Niutao in the Ellice, Nukuiona, Uvea, Kanathia, Fiji, and Wallis Island. Authentic specimens of the unfigured 0. rotomana enable me to confidently unite this with Mousson's species. Some such conclusion seems indeed to have been anticipated by Smith, who alludes to this and others as likely to "eventually prove to be slight variations of already known species."