Malayan roundleaf bat

The Malayan roundleaf bat ("Hipposideros nequam") is a horseshoe bat found only in Malaysia. It is listed as a data deficient species.
Taxonomy.
It was described as a new species in 1918 by Danish mammalogist Knud Andersen.
The holotype had been collected in 1879 by W. Davison in Klang, Malaysia.
It was presented to Andersen by Allan Octavian Hume.
It is considered a member of the "bicolor" species group within "Hipposideros" based on its morphology.
The holotype is the only known specimen of this species.
As it was damaged, it is uncertain if the Malayan roundleaf bat is truly a distinct species.
Its species name "nequam" is Latin for "worthless."
Description.
The forearm length of the holotype was .
It had a large nose-leaf of in length and in width.
Its first premolar is small and its nasal septum is very thin.
Range and habitat.
The Malayan roundleaf bat is only known from the type locality of Klang, Malaysia.
Conservation.
As of 2016, it is evaluated as a data deficient species by the IUCN.
It meets the criteria for this assessment because it is known from only a single specimen; there is no information on its ecological requirements; and its extent of occurrence is unknown.