Keyword Album: Flabellina%20affinis%20This%20species%20differ%20in%20having%20an%20opaque%20purple%20band%20just%20below%20the%20ceratal%20tip.%20You%20can%20see%20it%20clearly%20in%20your%20photo,%20which%20would%20make%20it%20Flabellina%20affinis.%20The%20ceratal%20groups%20in%20your%20photo%20don't%20seem%20to%20be%20on%20such%20obvious%20basal%20stalks%20but%20I%20suspect%20they%20are%20very%20contracted%20in%20this%20photo.%20In%20this%20photo%20you%20can%20also%20see%20the%20fine%20rings%20on%20the%20rhinophores.%20They%20are%20also%20present%20in%20F.%20ischitana%20but%20are%20not%20so%20clearly%20seen%20in%20your%20earlier%20photo.%20The%20two%20white%20sausage-shaped%20structures%20behind%20the%20first%20ceratal%20clusters%20are%20in%20fact%20the%20egg%20sacs%20of%20a%20parasitic%20crustacea%20living%20in%20the%20body%20cavity%20of%20the%20aeolid.Bill%20RudmanAustralian%20Museum,%20Sydney