\begin{table}%t2
%\centering
\small
\caption{Identification of the lines detected in the \mbox{$K$-band} spectra
  of candidate massive YSOs. Column 1
  lists the rest wavelength, Col.~2 the corresponding element and
  Col.~3 the line transition.\label{tab:lineid}}
\begin{tabular}{lll}\hline\hline
\multicolumn{1}{c}{$\lambda$ (\micron)} &\multicolumn{1}{c}{Element} &\multicolumn{1}{c}{Transition} \\ \hline
\noalign{\smallskip}
  2.0893   &     Fe~{\sc ii} &    3d6.4p--3d6.4s \\
  2.1127   &   \hei  &   1s.3p--1s.4s \\
  2.1138   &   \hei  &   1s.3p--1s.4s  \\
  2.1218   &    \htwo  &    1--0 S(1)\\
  2.1374   &     \ion{Mg}{ii} &   5s--5p \\
  2.1438   &     \ion{Mg}{ii} &   5s--5p \\
  2.1624   &    \hei & 1s.4d--1s.7s \\
  2.1649   &    \hei & 1s.4f--1s.7g \\
  2.1661   &     \ion{H}{i}(\brg) & 7--4  \\
  2.2935   &     CO  &    2--0\\
  2.3227   &     CO &     3--1\\
  2.3535   &     CO &     4--2\\
  2.3829   &     CO &     5--3\\
  2.3329   &     \ion{H}{i}&  33--5\\
  2.3364   &     \ion{H}{i}&  32--5\\
  2.3402   &     \ion{H}{i}&  31--5\\
  2.3445   &     \ion{H}{i}&  30--5\\
  2.3492   &     \ion{H}{i}&  29--5\\
  2.3544   &     \ion{H}{i}&  28--5\\
  2.3603   &     \ion{H}{i}&  27--5\\
  2.3669   &     \ion{H}{i}&  26--5\\
  2.3743   &     \ion{H}{i}&  25--5\\
  2.3828   &     \ion{H}{i}&  24--5\\
  2.3924   &     \ion{H}{i}&  23--5\\\hline
\end{tabular}
\end{table}