Superconductivity in La${}_3$Pt${}_4$

We found superconductivity of intermetallic La${}_3$Pt${}_4$ below 0.51 K, while searching for the Pt-substituted material of the noncentrosymmetric (NCS) superconductor LaNiC${}_2$ ($T_{\mathrm{c}}=2.7$ K.