the Coma supercluster no Magellanic Irr type is included in this work. We classify Irr any galaxy with no evident spiral structure nor circular symmetry. We prefer to classify Pec the otherwise normal objects with superposed peculiar features, such as bright spots, extra arms etc. Pec/c stands for Peculiar/compact; Pec/ms for Peculiar/multiple system. Col. 13: photographic magnitude from Zwicky et al. (1961-1968). Col. 14: $\rm B_0^T$ magnitude corrected for internal extinction (see Gavazzi & Boselli 1996). Col. 15: $\rm H_0^T$ magnitude corrected for internal extinction (see Gavazzi & Boselli 1996).

The sky distribution of CGCG galaxies members to the Coma Supercluster, thus restricted to the velocity range 5000-10000 $\rm km~s^{-1}$, is given in Fig. 1.

Observations and Data Reduction
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Narrow band imaging of the $\rm H\alpha$ line emission ($\rm \lambda=6562.8~ \AA$) from the target galaxies was obtained during from 1993 to 1997, using the 2.1 m telescope at San Pedro Martir Observatory (SPM) (Baja California, Mexico). Four galaxies were observed in 1990 using the Steward 2.3 m telescope at Kitt Peak (STW) (see also Gavazzi et al. 1995). The STW telescope was equipped with a 380x400 pixel CCD coupled with a focal reducer with a resulting pixel size of 