Helix abyssorum d’Orbigny, 1835 Fig. 45 Helix abyssorum d’Orbigny, 1835: 17. – Breure & Ablett, 2014: 9, figs 27A-C, L1iii. Bulimus abyssorum – d’Orbigny, 1837 [1834-1847]: 308, pl. 39 figs 7-8. – Gray, 1854: 21. Drymaeus abyssorum – Pilsbry, 1898 [1897-1898]: 192, pl. 37 figs 3-4. – Breure, 1975: 1149, pl. 7 fig. 2 (lectotype designation). Drymaeus (Drymaeus) hygrohylaeus – Miquel, 1989b: 77, fig. 1. Type locality: [Bolivia] “provincia Lagunacensi (republica Boliviana)”; see Breure, 1973: 113. Label: “ Bolivie ”, in Moricand’s handwriting. Dimensions: “Longit. 52 mil., latit. 25 millim.”; figured specimen herein H 46.9 D 24.6, W5.9. Type material: MHNG-INVE-63420, one paralectotype (ex d’Orbigny, Moricand coll.). Remarks: d’Orbigny did not state on how many specimens his description was based. The type series appears to have been split between the MNHN and NHMUK collections (Breure, 1975 b; Breure & Ablett, 2014), while one specimen was sent to S. Moricand (likely at an earlier stage before the final split was made). The lectotype is in the MNHN. None of the specimens in London match the original figures, while one of the specimens in Paris is close to the published dimensions. The current systematic position follows Breure & Ablett (2014). Current systematic position: Bulimulidae, Drymaeus (Drymaeus) abyssorum (d’Orbigny, 1835).

Published as part of Breure, Abraham S. H., 2016, Annotated type catalogue of the Orthalicoidea (Mollusca, Gastropoda, Stylommatophora) in the Muséum d'histoire naturelle, Geneva, pp. 57-103 in Revue suisse de Zoologie 123 (1) on page 61, DOI: 10.5281/zenodo.46290