rotundata, Microstoma Risso [A.] 1827:474, Pl. 14 (fig. 36) [Histoire naturelle des principales productions de l'Europe méridionale v. 3; ref. 3757] Nice, France, northwestern Mediterranean Sea. No types known. •Synonym of Microstoma microstoma (Risso 1810) -- (Cohen 1973:153 [ref. 6589], Cohen 1990:236 [ref. 14206]). Current status: Synonym of Microstoma microstoma (Risso 1810). Microstomatidae. Habitat: marine.