bifrons Pfeiffer, 1855

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

14. bifrons Pfeiffer, 1855 Fig. 2H, I

Pterocyclos bifrons Pfeiffer, 1855b: 117. Reeve 1863: volume 14, Pterocyclos , pl. 1, species 1. Kobelt 1902: 162, 163.

Current generic position.

Pterocyclos Benson, 1832

Type locality.

Ceylon [Sri Lanka].

Type material.

Syntype NHMUK 20170365 (3 shells; Fig. 2H, I).

Remarks.

The species was described based on specimens from the Cuming collection. The original description did not include illustrations, and only one set of measurements was given. Reeve (1863) re-described and illustrated a single specimen from the Cuming collection. There are three specimens from the Cuming collection in the NHM type lot with an original label in Pfeiffer’s handwriting stating the species name and collection locality. The specimen figured in Reeve (1863) closely matches the measurements given in the original description is illustrated here in Figure 2H.