Opisthobranchs from the western Indian Ocean, with descriptions of two new species and ten new records (Mollusca, Gastropoda) Author Yonow, Nathalie text ZooKeys 2012 197 1 130 http://dx.doi.org/10.3897/zookeys.197.1728 journal article http://dx.doi.org/10.3897/zookeys.197.1728 1313-2970-197-1 Phyllidia varicosa Lamarck, 1801 Phyllidia varicosa . - Edmunds 1971 : 388, fig. 23 (Tanzania); Edmunds, 1972: 75 (Seychelles); Rao et al. 1974: 119, fig. 2a, b (Laccadive Islands); Fahrner and Schroedl 2000 : 164, figs. 1-4 (Red Sea and Indonesia); Apte 2009 : 171, fig. 2s (Laccadive Islands); Richmond 2011 : 282 (East Africa); Yogesh Kumar et al. 2011 : 111, fig. 3c (India). Phyllidia arabica Ehrenberg. - Yonow 1996 : 495, figs. 7A-F, 8A-C, tab. 2 and references therein (Indian Ocean). non Phyllidia varicosa . - Gosliner 1987 : 90, fig. 152 (South Africa) (= Phyllidia coelestis Bergh). Material. Socotra: two pres. specimens 65 x 31 mm and 42 x 12 mm curled, (St. 064, SAM1), Quatub Bay, 18 March 1999, leg. S Al-Moghrabi; single pres. specimen 48 x 18 mm (St. 063, GR-57), 12°38.945'N , 53°56.028'E , off Quatub fishing village, in front of airport, 18 March 1999, leg. G Reinicke; 33 x 15 mm pres. (St. 068, MAP-138), 12°41.062'N , 54°04.508'E , Hawlaf, off jetty, 19 March 1999, leg. M Apel. - South Africa: three specimens (Natal Museum refs 51894, 5908). - Kenya: 35 x 15 mm and 15 x 8 mm both preserved (completely bleached dorsally and ventrally, notch on foot anteriorly), Turtle Bay, subtidal on rock, July 1969, leg. K Brander (nudibranch XII, TE Thompson collection, NHMUK acc. no. 2364). - Tanzania: photographs of two individuals, 1994, MD Richmond; photographs of four individuals, M'Nazi Bay, Msimbati, near Mtwara, May 1994, IM Horsfall; photographs of several individuals, Mafia Island, shallow water, 12 February 2004 and 06 January 2008, A de Villiers. - Zanzibar: photo of one individual, MD Richmond. - Mauritius: 65 x 32 mm pres. (dissected), MNHN, Paris (no label other than 'Mauritius' ). - La Reunion , Mauritius, Rodrigues, and Mayotte Islands: http://seaslugs.free.fr/nudibranche/a_intro.htm. - Seychelles: 53 x 25 mm pres., Victoria Harbour, 12 May 2005, leg. MD Richmond; photo of one individual, Lilot , NW Mahe , 1988-1989, P Kemp. - Maldives: numerous individuals documented and/or photographed but not preserved, 8-80 mm, Maldives Expedition, N Yonow (see Yonow 1994, 1996) and 1997-1999 by J Hinterkircher. - Sri Lanka: photos of two individuals (1 adult & 1 very small juvenile), Negombo, N of Colombo, April 1995, RC Anderson; photos of two large individuals, Negombo, N of Colombo, 16 January 2011, S Kahlbrock.