The　reverse　aggregates　formed　by　mixed　zwitterionic　surfactant,　N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulphonate　(abbreviated　to　SB-12),　and　non-ionic　surfactant,　tetraoxyethylene　lauryl　ether　(C12E4),　in　cyclohexane　have　been　studied　using　rheological　and　small　angle　X-ray　scattering　(SAXS)　measurements　and　polarised-microscopy　(POM)　observations.　With　the　help　of　C12E4　and　a　trace　amount　of　water,　SB-12　was　dissolved　in　cyclohexane　to　obtain　a　homogeneous　solution.　The　morphologies　of　the　aggregates　depended　on　the　molar　ratio　of　C12E4　to　SB-12,　β.　At　β　=　1,　reverse　wormlike　micelles　were　formed,　and　at　β　=　2,　there　were　reverse　vesicles　in　the　solution.　The　mechanism　underpinning　the　reverse　aggregate　formation　was　discussed.　The　amount　of　trace　water,　represented　as　the　mole　ratio　of　water　to　total　surfactants　W0,　did　not　influence　the　aggregate　morphologies.　©　2016　The　Royal　Society　of　Chemistry.