between AGNs (Seyferts and LINERs) and HII-like objects (Veilleux & Osterbrock 1987). We think that the nucleus of NGC 3808B may be an example of masking of active nucleus by circumnuclear burst of star formation - the situation discussed earlier by Keel et al. (1985). (Note that the reddening-corrected H$\alpha$ luminosity of the central region of the galaxy is more than $\rm 10^{41}$ erg/s.) For the final decision of the problem of the nature of NGC 3808B nucleus spectral observations with high (better than 1") spatial resolution are needed.

### Forming ring

The photometric profile of NGC 3808B along the minor axis is shown in Fig.4a. Just for $\rm r\approx5"$ from the nucleus surface brightness distribution becomes more flat than that usually observed in normal edge-on spirals. This feature may be explaned by the contribution to the observed profile of the most bright and contrast part of spiral arm of NGC 3808A drawn out to NGC 3808B and twined the latter (see Fig.1). Surface brightness of this pseudo-ring structure crossing the central region of NGC 3808B along its minor axis is $\mu(V)\,\approx\rm\,23-24$.

The dependence on distance from the nucleus of radial velocities along the minor axis found in RC from 