We present the results of a search for emission-line galaxies ( ELGs ) towards nearby voids , based on a sample selected on the HQS ( Hamburg Quasar Survey ) ( Hagen et al .
1995 ) - III-aJ objective-prism plates .
The survey was based on the presence of emission-lines and therefore has the advantage to detect very faint objects ( with all the flux in the emission-lines and almost no continuum ) , that would be missed by an apparent magnitude limited survey .
We found objects as faint as B=20.5 and M _ { B } = ( -15.0 , -12.0 ) .
The relevant brightness parameters of the sample are : ( 1 ) the sum of the flux in the emission-lines and of the continuum flux under the line , and ( 2 ) the equivalent widths ( EW ) ; the corresponding completeness limits are 6.7 \times 10 ^ { -14 } { erg } { sec } ^ { -1 } { cm } ^ { -2 } and 8 { \AA } , respectively .

The observational data are given in Popescu et al .
( 1996 ) and in the present paper we consider a complete subsample from these data .
We analyse the spatial distribution of our sample of ELGs in comparison with the distribution of normal galaxies .
Overall both distributions trace the same structures .
Nevertheless we also found a few ELGs in voids , from which at least 8 lie in the very well defined nearby voids .
The isolated galaxies seem to form fainter structures that devide the larger voids into smaller ones .
From our estimates of the expected number of void galaxies we conclude that we did not find an underlying homogenous void population .