A rhetorical figure with two syntactically parallel constructions, one of which has the word order reversed. For example Alexander Pope's “They fall successive, and successive rise.”
Editors. "Chiasmus". The Literary Encyclopedia. First published 01 November 2001; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=183, accessed 27 April 2015.]