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In 2016, the type-material of ten of the 15 Brazilian land planarians (  Platyhelminthes  ,   Tricladida  ,   Geoplanidae  ) described by  Schirch (1929)  was discovered deposited in the  Museu Nacional do Rio de Janeiro  ( MNRJ ). Schirch only described the external morphology of these species, all originally placed in the genus    Geoplana   . By the 1930s and 1950s    Geoplana   itatiayana   ,    G.   plana   , and    G.   rezendei    underwent taxonomic revision based on the study of non-type specimens. The remaining 12 species also underwent a taxonomic revision but only based on the literature. Current names of these species are    Geoplana   goettei   ,    Pseudogeoplana   arpi   ,    Ps.   blaseri   ,    Ps.   bonita   ,    Ps.   bresslaui   ,    Ps.   cardosi   ,    Ps.   doederleini   ,    Ps.   lumbricoides   ,    Ps.   obscura   ,    Ps.   riedeli   ,    Ps.   theresopolitana   , and    Ps.   wetzeli   . The species    Geoplana   maximiliani    sensu  Schirch (1929)  was renamed as    Ps.   schirchi    Ogren &amp; Kawakatsu, 1990.The present study reports a taxonomic revision of seven of Schirch’s species using type material, namely    Obama   itatiayana   ,    Pasipha   plana   ,    Pseudogeoplana   arpi   ,    Ps.   bresslaui   ,    Ps.   doederleini   ,    Ps.   schirchi    and    Ps.   wetzeli   . Additional specimens of some of these species were also examined. Morphological data from histological preparations and from virtual sections were obtained through a non-destructive technique of X-ray computed microtomography ( µCT ). This approach resulted in the preservation of the entire body of at least one type-specimen of each species, and the holotype of    Ps.   bresslaui   . Conspecificity of    O.   itatiayana    and    P.   plana    was confirmed, as previously reported in the literature. It is also proposed that    Ps.   bresslaui    belongs to the genus    Paraba   , while the other species should remain in    Pseudogeoplana   , since type-specimens are either immature, poorly preserved or simply lost.

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X-ray microcomputed tomography applied to the taxonomic study of rare material: redescriptions of seven of Schirch’s Brazilian species of land planarians (  Geoplanidae  ,   Platyhelminthes  )