The taxonomic research of Jules Richard on Cladocera (Crustacea: Branchiopoda) and his collection at the National Museum of Natural History, U. S. A. Author Kotov, Alexey A. A. N. Severtsov Institute of Ecology and Evolution, Leninsky Prospect 33, Moscow 119071, Russia. Author Ferrari, Frank D. Department of Systematic Biology, National Museum of Natural History, Smithsonian Institution, Museum Support Center, 4210 Silver Hill Road, Suitland, MD 20746, USA. E-mail: ferrarif @ si. edu text Zootaxa 2010 2010-07-28 2551 1 37 64 https://biotaxa.org/Zootaxa/article/view/zootaxa.2551.1.2 journal article 10.11646/zootaxa.2551.1.2 1175-5326 5304719 26. Macrothrix goeldi Richard, 1897 Macrothrix Goeldi Richard 1897a, p. 287 –289, figs 32–34. Type locality. "... en eau douée, en particulier près de Concepción et à Lunache" (Richard 1897a), Chile . Richard's specimens. Unknown. Comments. A junior synonym of M. spinosa according to Smirnov (1992) , which is regarded now as a circumtropical species; however, specimens from different localities should be reconciled .