A new species, Mesobuthus bolensis from the Province of Xinjiang, in the Western region of China, is described. The new species can be defined by a densely granular carapace; carinae, granulation, and metasomal segment V without any dark pigmentation; carinae of carapace and pedipalp patella dispersively granular. Furthermore, restudy of the characters of Mesobuthus songi Lourenço, Qi & Zhu 2005, described from the southern region of Pulan, Xizang (Tibet), China led us to accommodate this species in the genus Hottentotta Birula, as a new combination Hottentotta songi (Lourenço, Qi & Zhu 2005).