mastersi (Blanford, 1877)

Sutcharit, Chirasak, Ablett, Jonathan D. & Panha, Somsak, 2019, An annotated type catalogue of seven genera of operculate land snails (Caenogastropoda, Cyclophoridae) in the Natural History Museum, London, ZooKeys 842, pp. 1-65 : 1

65. mastersi (Blanford, 1877) Fig. 9A

Pterocyclos (Spiraculum) mastersi Blanford, MSS. Hanley and Theobald 1870: 3, pl. 5, fig. 1 [nomen nudum].

Spiraculum mastersi Blanford, 1877: 313, 314.

Pearsonia mastersi - Kobelt 1902: 174. Kobelt 1913: 769, 770, pl. 113, fig. 9.

Current generic position.

Pearsonia Kobelt, 1902

Type locality.

in montibus Naga dictis, ad latus meridionale province Assam, haud procul a Golaghat [Naga Hills, Golaghat District, southern of Assam State, India].

Type material.

Syntype NHMUK 1888.12.4.1957 (1 shell; Fig. 9A) from Gholaghta, Assam.

Remarks.

This taxon was first published in Hanley and Theobald (1870), who attributed the name to WT Blanford as a manuscript name. However, Hanley and Theobald (1870: 3) did not provide any description or definition of the taxon, only a figure was provided, which does not meet the requirements of the ICZN (1999: Art. 12.2). Therefore, this taxon name was not made available. Pfeiffer (1876: 386) mentioned the taxon name without further description or definition, and so again the was not made available. Blanford (1877) published a complete description of this taxon under the same name and so making it available. Therefore, the type series is made up of the specimens sent by Blanford and cited and figured in Hanley and Theobald (1870: pl. 5, fig. 1), along with the specimens mentioned by Blanford (1870). Coan and Kabat (2012: 326) could not trace the specimen figured in Hanley and Theobald (1870: pl. 5, fig. 1). However, the NHM collections hold a lot containing a single shell from the WT Blanford collection with a handwritten label stating the taxon name, and the collection locality "Gholaghat, Assam". This specimen matches well with the original description and the set of shell dimensions, and is considered as the syntype and figured herein.