MolluscaBase taxon details
original description
(of Helix densa A. Adams & Reeve, 1850) Adams, A. & Reeve, L. A. (1848-1850). <i>Mollusca</i>. In A. Adams (ed.), <i>The zoology of the voyage of H.M.S. Samarang, under the command of Captain Sir Edward Belcher, C.B., F.R.A.S., F.G.S., during the years 1843-1846</i>. Reeve & Benham, London, x + 87 pp., 24 pls. [Pt. I. Preface to Mollusca (iii–x, by Adams only), 1–24, pls. 1–9, 1 November 1848; Pt. II, 25–44, pls. 10–17, 1 May 1850; Pt. III, Preface and plate explanations (i-xv), 45–87, pls. 18–24, 1 September 1850.]. , available online at https://www.biodiversitylibrary.org/page/39770936 page(s): 62, pl. 16, fig. 8 [details]
original description
(of Helix schumacheriana L. Pfeiffer, 1850) Pfeiffer, L. (1850). Beschreibungen neuer Landschnecken. <em>Zeitschrift für Malakozoologie. Cassel.</em> 7 (5): 65-80 (July 1850); 7 (6): 81-89 (August 1850)., available online at https://biodiversitylibrary.org/page/16300365 page(s): 70 [details] 
original description
(of Helix atrofusca Albers, 1860) Albers, J. C. & Martens, E. von. (1860). <i>Die Heliceen nach natürlicher Verwandtschaft systematisch geordnet von Joh. Christ. Albers</i>. Ed. 2. Pp. i-xviii, 1-359. Leipzig: Engelman [original manuscript of Albers edited and published by Martens]., available online at https://www.biodiversitylibrary.org/page/11648540 [details]
basis of record
Maassen, W. J. M. (2001). A preliminary checklist of the non-marine molluscs of West-Malaysia: "a Hand List". <em>De Kreukel, Extra Editie 2001.</em> 1–155. page(s): 102 [details] Available for editors [request]
additional source
Solem, A. (1964). A collection of non-marine mollusks from Sabah, Malaysia. <em>Sabah Society Journal.</em> 2(1/2): 1-40. page(s): 29 [details] Available for editors [request]
additional source
Rensch, B. (1934). Zur Kenntnis der Land- und Süsswassermollusken Sumatras. <em>Archiv für Molluskenkunde.</em> 66: 313-339. page(s): 323 [details] Available for editors [request]
additional source
Collinge, W. E. (1901). On the anatomy of a collection of slugs from N. W. Borneo; with a list of the species recorded from that region. <em>Transactions of the Royal Society of Edinburgh.</em> 40: 295–312., available online at https://www.biodiversitylibrary.org/page/41678716 page(s): 50 [details]
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