MolluscaBase name details
original description
(of Vallonia excentrica Sterki, 1893) Pilsbry, H. A. (1892-1893). <i>Manual of conchology, structural and systematic, with illustrations of the species</i>. Ser. 2, Pulmonata. Vol. 8: Helicidae, vol. 6. pp 1-314, pls 1-58. Philadelphia, published by the Conchological Section, Academy of Natural Sciences. [pp. 1-48, pls 1-15, 25 July 1892; pp. 49-112, pls 16-27, 16 Nov 1892; pp. 113-160, pls 28-41, 25 Feb 1893; pp. 161-314, pls 42-58, 1 July 1893]. , available online at https://biodiversitylibrary.org/page/23736486
page(s): 249, pl. 32, figs. 6-9 [details]
basis of record
Damjanov, S.G. & Likharev I.M. (1975). Fauna na Bulgarya. 4. Sukhozemni okhljuvi (Gastropoda terrestria). 425 pp. [21 November]. Sofija (Izdatelstvo na Balgarskata Akademija na Naukite) [in Bulgarian] [Fauna Bulgarica. 4. Gastropoda terrestria. - Sofia (Academia Scientiarum Bulgarica)].
page(s): 134, fig. 68 (l-p) [details]