Using high resolution spectra of a large sunspot umbra obtained with
FTS of the McMath-Pierce Solar Telescope of NSO/NOAO at Kitt Peak, we have
been able to identify two new bands (2-0) and (2-1) of the
- system of FeH molecule. Previously, the two bands
(0-0) and (1-0) were identified. The new identification of more than
500 FeH lines in the umbral spectrum confirms that this molecule
accounts for the majority of lines in sunspot umbrae in the spectral
range 
Å; 
. The presence of FeH lines in sunspot umbral spectra
offers the possibility to study the higher layers in the umbral
atmosphere. The variation of equivalent widths with rotational quantum
number reflects the rotational temperature of these layers
(Mulchaey 1989;
Fawzy et al. 1997, in preparation).