中国小蛹螺属一新种记述(前鳃亚纲,蛹螺科)

A NEW SPECIES OF THE GENUS PUPINELLA FROM CHINA(PROSOBRANCHIA,PUPINIDAE)

在整理广西陆生贝类标本中得小蛹螺属1新种,即具槽小蛹螺Pupinella(Pupinopsis)sulcatus sp.nov.,对新种进行了详细描述,并与近似种进行了比较。

A new species of the genus Pupinella is described in the present paper. The materials were collected in Guangxi Zhuang Autonomous Region, China in 1982 by the authors. Type specimens are deposited in the Institute of Zoology, Chinese Academy of Sciences, Beijing, China. Pupinella （Pupinopsis） sulcatus sp. nov. （Figs. 1-5 ） Holotype, alt. 18.0mm, diam. 8.0 mm, diam. of aperture 4.0 mm, collected from Hunm Town, Jingxi County （23°01＇N, 106°04＇E）, Zhuang Autonomous Region of Guangxi, China, 13 July 1982. Paratypes 2 specimens, alt. 17.5-19.0 mm, diam. 7.6-8.2 mm, diam. of aperture 3.14.05 mm, collection collection data same as holotype. Shell small, thick, elongated oval cone-shaped. Whorls 5 1/2, moderately convex, with high spiral part. The body whorl and the second body whorl equal in size. Shell yellowish brown or grey brown in colour. Apex blunt, suture deep. Aperture circular with thickened margin, reflected; apertural margin on the lower left side interrupted by a tube and a hole, on the right side interrupted by a channel . Operculum homy, closely coiled. This new species very dosely resembles Pupinella （Pupinopsis） swinhoei H. Adams, 1866, but differs from the latter by the larger shells （ alt. 18.0 mm, diam 8.0 mm, 5 1/2 whorls）, less protruding internal apertural margin and protruding apertural margin at lower left side.. The later species is smaller （alt. 9.6-14.0 mm, diam. 4-6 mm, 6 whorls ） with protruding internal apertuml margin and smoothly curved apertural margin at lower left side.