*Lecturer, Termiz State University, Uzbekistan
**Master student, Termiz State University, Uzbekistan
Online published on 27 August, 2020.
The article presents the biological features and species composition of terrestrial mollusk complexes of various biotopes of the Kugitangtau and Babatag ranges. The natural conditions of the vertical profiles of these ridges are similar; therefore, we consider the distribution of terrestrial mollusks along the altitudinal belts and biotopes together for two ridges. The vertical belts were examined: desert, hill, tau. The study shows that the mollusks that live on the Babatag ridge are inferior in species diversity to the small-scale fauna of the Kugitangtau ridge. There are no 10 species of terrestrial mollusks on the Babatag ridge (see table 24).
Kugitangtau range, Babatag rang, Terrestrial mollusks, Desert, Hill, Tau, And biotope