Two new species of tardigrades are described from China (Biserovus xiae sp. n. and Doryphoribius qinlingense sp. n.). B. xiae sp. n. is the second species of this genus. It differs from B. bindae in shorter and wider bucco-pharyngeal tube with buccal tube width pt 15.0, in relatively shorter pharyngeal tube, and in narrower and shorter common tract and much longer principal and secondary branches of the double claws. D. qinlingense differs from other species of the genus in having a smooth cuticle, or in the number of placoids, or in having claws with a well-developed common tract or with a relatively longer secondary branch.