{ \cal L } _ { R . S . } = \frac { 1 } { 2 } \varepsilon ^ { \mu \nu \rho \sigma } \bar { \psi } _ { \mu \alpha } ( \gamma _ 5 \gamma _ { \nu } ) _ { \alpha \beta } \partial _ { \rho } \psi _ { \sigma \beta }  \wolf \octopus \alligator \guinea-pig