Type material in Rio de Janeiro

In a paper, until now overlooked by me, Pimenta et al. (2014) presented an annotated catalogue of type material in the Museu Nacional, Rio de Janeiro (MNRJ). It lists types from all molluscan groups, and a total of 518 type lots. Of the terrestrial Gastropoda, 29 taxa belong to the superfamily Orthalicoidea, while eight taxa are representatives of other families.

The abstract reads: “A curatorial revision of the type specimens deposited in the Mollusca Collection of the Museu Nacional / UFRJ, Rio de Janeiro, Brazil (MNRJ) revealed the existence of 518 lots of type specimens (holotypes, neotypes, syntypes and paratypes) for 285 names of molluscan taxa from 88 families, including 247 gastropods, 30 bivalves, three cephalopods and five scaphopods. A total of 106 holotypes and one neotype are deposited in the MNRJ. Type material for ten nominal taxa described as being deposited in the MNRJ was not located; the probable reasons are discussed. Some previously published erroneous information about types in the MNRJ is rectified. A total of 37 type specimens are illustrated”. Land snails illustrated are highlighted in the figure below.

Pimenta et al 2014

The paper corrects several errors made by earlier authors, but also introduces some new inconsistencies. Several species of Bostryx are listed, some assigned to Bulimulidae (correct), others to Orthalicidae (not correct). The phylogenetic study on the Orthalicoidea [Breure & Romero 2012] has not been consulted, and may have lead to several improper family assignments.

Nevertheless, this is an important study and is useful for any malacologist dealing with Neotropical mollusks.

Reference:
Pimenta, A.D., Monteiro, J.C., Barbosa, A.F., Salgado, N.C. & Coelho, A.C. dos Santos, 2014. Catalogue of the type specimens deposited in the Mollusca Collection of the Museu Nacional / UFRJ, Rio de Janeiro, Brazil. — Zootaxa 3780: 51-107. http://dx.doi.org/10.11646/zootaxa.3780.1.3

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