Spiraculum planum Godwin-Austen, 1915

Jirapatrasilp, Parin, Ablett, Jonathan D., Panha, Somsak & Sutcharit, Chirasak, 2021, Clarification on the name-bearing type designation of several cyclophorid species (Mollusca, Gastropoda) by H. H. Godwin-Austen (1915), ZooKeys 1049, pp. 43-66 : 43

7. Spiraculum planum Godwin-Austen, 1915

Spiraculum planum Godwin-Austen, 1915: 497, pl. 39, fig. 6, 6a, b.

Type material.

Syntypes NZSI M.5992 from Upper Rotung, Abor Hills; NZSI M.5992a from Yembung.

Other non-type materials.

NHMUK 1903.7.1.3596 (1 shell) from the Miri Hills.

The type series of this species comprises two specimen lots, except for lot "No. 3596 B.M." that Godwin-Austen (1915) regarded as a small variety. Without any explicit holotype designation or equivalent expression, all specimens in these lots are syntypes. However, only specimen lot "No. 5992 Ind. Mus." was mentioned in the “Type” paragraph, and one specimen from this lot was figured with the annotation “Type” in the plate caption. This specimen lot is, therefore, deemed onomatophore as originally intended by Godwin-Austen (1915). Therefore, subsequent authors should select that particular figured specimen from the lot NZSI M.5992 as the lectotype.