Sultana species. i–iiS. (Metorthalicus) fraseri (Pfeiffer, 1858), lectotype NHMUK 20140083 (H = 88.9) iii–ivS. (M.) kellettii (Reeve, 1850), lectotype NHMUK 1975241 (H = 61.2).

 
 
  Part of: Breure ASH, Ablett JD (2015) Annotated type catalogue of the Megaspiridae, Orthalicidae, and Simpulopsidae (Mollusca, Gastropoda, Orthalicoidea) in the Natural History Museum, London. ZooKeys 470: 17-143. https://doi.org/10.3897/zookeys.470.8548