Sky distribution of galaxies around the Virgo cluster. ETGs (from the VCC with m_p < 18.0 mag) are given with small black dots. HI-selected LTG galaxies, coded according to their HI deficiency parameter (red dots: Def_HI > 0.9; green dots: 0.3 < Def_HI < 0.9; blue dots Def_HI ≤ 0.3). The empty red circles represent the 26 LTGs undetected by ALFALFA listed in Table 1. Superposed are the X-ray contours from ROSAT (Böhringer et al. 1994). The position of cluster A (M 87), B (M 49) and of clouds M, N and W are given. Clouds M and N coincide in position but have significantly different distance moduli.