Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean Author Yonow, Nathalie Author Anderson, R. Charles Author Buttress, Susan G. text Journal of Natural History 2002 2002-05-31 36 7 831 882 http://dx.doi.org/10.1080/00222930110039161 journal article 10.1080/00222930110039161 1464-5262 Chromodoris geminus Rudman, 1987 Chromodoris geminus Rudman, 1987: 384 , ®gure 39G; Yonow, 1989: 294, pl. 6; Yonow and Hayward, 1991: 13, ®gure 12E. Material. Colour photograph of a single individual by M. Spalding: outer reef, Nelson Island, Great Chagos Bank; March 1996 . Description. Photograph of dorsal surface clearly shows typical coloration of this species: a yellow-fawn dorsum, many violet ocellations with blue white rims, and four marginal bands. These comprise a thin white margin, a wider grey-fawn