Abstract:The nemertean genus Ototyphlonemertes includes small and slender nemerteans that inhabit the interstitial spaces of marine sands. They are known to occur all over the world, but have not been reported from China seas. Recent years, we collected Ototyphlonemertes specimens from intertidal coarse sand in Qingdao (36o03′N, 120o21′E). After being relaxed with 7.5% MgCl2, specimens were observed and photographed under microscope. Two species, O. dolichobasis Kajihara, 2007 (Fig. 1) and O. martynovi Chernyshev, 1993 (Fig. 2), were identified by morphological studies. Present specimens of O. dolichobasis, which was characterized by an extremely long stylet basis and was previously known only from its type locality (Otsuchi Bay, Iwate Prefecture, Japan), have a larger body size, and a smaller central stylet and basis than those in the original description, but the ratios of “basis length / basis width” and “central stylet length / basis length” are the same as in the original description. Except being smaller in body size, the present O. martynovi specimens are well accordant to the original description. The head bristle formula of present specimens, like that of the type specimens from Peter the Great Bay, is different from O. cf. martinovi from Van Phong Bay, Vietnam. Present specimens are deposited at Institute of Evolution and Marine Biodiversity, Ocean University of China.