Notarchus indicus Schweigger, 1820

Yonow, Nathalie, 2012, Opisthobranchs from the western Indian Ocean, with descriptions of two new species and ten new records (Mollusca, Gastropoda), ZooKeys 197, pp. 1-130 : 10

Notarchus indicus Schweigger, 1820

Notarchus indicus . - Farran 1905: 355 (Sri Lanka); Eales 1944: 12, fig. 12 (Zanzibar); Yonow 2000: 96, pl. 9 (Red Sea); Yonow 2008: 105 (Red Sea).

Notarchus ceylonicus Farran, 1905: 355, pl. 5 figs. 18-23 (Sri Lanka).

Material.

Socotra: four specimens 15-20 mm preserved lengths (IT-157, RJ-011), 12°18.698'N, 53°48.285'E, 09 April 1999, leg. R Janssen.

Description/Distribution.

Preserved specimens are similar to previously examined material from the Red Sea, severely contracted into spheres with varying amounts of speckling remaining on different specimens. The species is circumtropical, common where it occurs but not often recorded. Records from the western Indian Ocean are summarized by Bebbington (1974); there are no new records apart from those from the Red Sea listed above.