\documentclass{article}
\usepackage[pdftex,active,tightpage]{preview}
\setlength\PreviewBorder{2mm}

\usepackage{tikz}
\usetikzlibrary{shapes.multipart,chains,arrows}

\tikzset{
    squarecross/.style={
        draw, rectangle,minimum size=18pt, fill=orange!80,
        inner sep=0pt, text=black,
        path picture = {
            \draw[black]
            (path picture bounding box.north west) --
            (path picture bounding box.south east)
            (path picture bounding box.south west) --
            (path picture bounding box.north east);
        }
    }
}

\begin{document}
\begin{preview}
\begin{tikzpicture}[
        list/.style={
            very thick, rectangle split,
            rectangle split parts=2, draw,
            rectangle split horizontal, minimum size=18pt,
            inner sep=4pt, text=black,
            rectangle split part fill={red!20, blue!20}
        },
        ->, start chain, very thick
      ]

  \node[list,on chain] (A) {12};
  \node[list,on chain] (B) {99};
  \node[list,on chain] (C) {37};
  \node[squarecross]   (D) [right=of C] {};
  \draw[*->] (A.two |- A.center) -- (B);
  \draw[*->] (B.two |- B.center) -- (C);
  \draw[*->] (C.two |- C.center) -- (D);
\end{tikzpicture}
\end{preview}
\end{document}