Adding a legend for many subfloats: unlabeled subfloat

I am using memoir and adding subbottom to figure environments like this:

\begin{figure}
\subbottom[Blah......]
{
First figure
}
\subbottom
{
Legend goes here
}
\subbottom[Blah.....]
{
Second figure
}
\end{figure}


How do I make it so that the legend subfigure does not use up a letter so that the first and second real figures get labeled 1.a) and 1.b) (rather than 1.c)?

I considered letting the legend be part of one of the existing figures, but it creates an imbalance that I don't like.

-

You can manually correct the counter:

\documentclass{memoir}
\newsubfloat{figure}

\begin{document}

\begin{figure}
\centering
\subbottom[Blah......]
{%
First figure
}%
\subbottom
{%
Legend goes here
}%