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In H. infucata The gills are simple, two-sided in cross-section, with a thin red line along the internal (b) and external (a) edge The two face have have gill leaflets (c)
Philibert Bidgrain Mayotte, Mtsanga Jimaweni, less 1 m, 26 July 2006, size : 30 mm
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In Hypselodoris nigrostriata The gills are triangular in cross-section which means there are three edges to each gill, one on the inside (a) and two on the outside (b), each with a bright orange line The three edges of each gill are bright orange, the two lamellate sides are white and the smooth outer side is whitish orange.
Fabrice Schubert Mayotte, Bandrele, 8 m, 10 January 2010, size : a few specimen between 30 and 60 mm |
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In Chromodoris annulata The gills are quadrangular in cross-section which means there are four edges to each gill, two on the inside (a) and two on the outside (b), each with a deep purple line The inner (c) and outer face (d) of the each gill, is without gill leaflets The two "lateral" face (e) have gill leaflets |
Emmanuel Eby Mayotte, "Longoni harbour", 7 July 2007 |
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