Bulimus ( Hapalus ) Albers, 1850: 140 . [non Illiger 1801 (Coleoptera)]. Type species Bulimus grateloupi Pfeiffer, 1846 . Albers 1860: 238 . Illiger 1801 Curvella Chaper, 1885: 49 Pilsbry 1906: 46 Gude 1914: 348 Zilch 1959: 351 Schileyko 1999: 515 Chaper (1885: 48) Contributions on a small collection of the former Subulinidae Fischer & Crosse, 1877 (Eupulmonata, Achatinoidea) with catalogue of the Glessula and Rishetia species recorded from Myanmar Man, Nem Sian Ablett, Jonathan D. Lwin, Ngwe Sutcharit, Chirasak Panha, Somsak ZooKeys 2024 2024-07-30 1208 173 239 Chaper, 1885 Chaper 1885 Gastropoda Subulinidae Curvella Animalia Stylommatophora Mollusca genus      Bulimus( Hapalus)  Albers, 1850: 140. [non  Illiger 1801(Coleoptera)]. Type species  Bulimusgrateloupi Pfeiffer, 1846. Albers 1860: 238.    Curvella —  Chaper, 1885: 49.  Pilsbry 1906: 46.  Gude 1914: 348.  Zilch 1959: 351.  Schileyko 1999: 515. Budha et at. 2017: 120.   Type species.    Curvella sulcata Chaper, 1885, by original designation in  Chaper (1885: 48).   Diagnosis. Shell oblong-conical; spire low or high and rapidly attenuated; embryonic whorls smooth; subsequent whorls with equally or irregularly spaced thick or fine radial striations or ribs. Aperture vertical, broad-ovate, or oblong, and somewhat pointed above; columella straight; columellar margin expanded near umbilicus. Penis simple and short papillate or short tube; epiphallus and flagellum absent; vagina large, muscular, and nearly equal to penis length.   Remarks.   Curvellais clearly distinct from other subulinid genera such as  Allopeas,  Bacillum, and  Opeasby its oblong-conical shell, short spire, high and wide aperture, and its much broader last whorls (Table 2). Regarding the genitalia, this genus displays a more rounded, muscular, short penis and a thicker vagina than  Allopeasand  Opeas( Schileyko 1999). In comparison, the two latter genera have a slender, narrow, more elongated penis and vagina compared to  Curvella( Schileyko 1999; Budha 2017). However, only genitalia of  Curvella sikkimensis(Reeve, 1850)is known for this genus at present ( Budha 2017). This genus is widely distributed from Africa to South Asia and China, and ~ 95 species have been reported ( Pilsbry 1906; Gude 1914; Schileyko 1999; Ramakrishna et al. 2010; Budha et al. 2017; MolluscaBase 2023). There are scattered reports of four  Curvellaspeciesin Myanmar, while one species,  C. tonkiniana Jaeckel, 1950, has been reported in Vietnamand one species,  C. jousseaumei( de Morgan, 1885), from Peninsular Malaysia( Gude 1914; Maassen 2001; Schileyko 2011; Vermeulen et al. 2015).