original description
Mörch, O. A. L. (1852-1853). <i>Catalogus conchyliorum quae reliquit D. Alphonso d'Aguirra & Gadea Comes de Yoldi, Regis Daniae Cubiculariorum Princeps, Ordinis Dannebrogici in Prima Classe & Ordinis Caroli Tertii Eques. Fasc. 1, Cephalophora</i>, 170 pp. [1852]; <i>Fasc. 2, Acephala, Annulata, Cirripedia, Echinodermata</i>, 74 [+2] pp. [1853]. Hafniae [Copenhagen]: L. Klein. , available online at http://www.biodiversitylibrary.org/bibliography/12921
page(s): vol. 2 p. 4 [details]
original description
(of Longimactra H. J. Finlay, 1928) Finlay, H. J. (1928). The Recent Mollusca of the Chatham Islands. <em>Transactions of the New Zealand Institute.</em> 59: 232-286.
page(s): 279 [details] Available for editors [request]
original description
(of Mactra (Pseudoxyperas) Sacco, 1901) Sacco, F. (1901). I molluschi dei terreni terziarii del Piemonte e della Liguria. Parte XXIX. (Donacidae, Psammobiidae, Solenidae, Mesodesmidae, Mactridae, Cardiidae, Myidae, Corbulidae, Glycymeridae, Gastrochaenidae, Pholadidae, Teredinidae, Cryptodontidae, Ungulinidae (Diplodontidae), Lucinidae, Tellinidae, Scrobiculariidae, Cuspidariidae, Solenomyidae, Pandoridae, Verticordiidae, Lyonsiidae, Ceromyidae, Arcomyidae, Anatinidae, Poromyidae, Pholadomyidae e Clavagellidae). Carlo Clausen, Torino, 216 pp., 29 pl., available online at http://www.biodiversitylibrary.org/item/47316
page(s): 26 [details]
original description
(of Spisula (Pseudoxyperas) Sacco, 1901) Sacco, F. (1901). I molluschi dei terreni terziarii del Piemonte e della Liguria. Parte XXIX. (Donacidae, Psammobiidae, Solenidae, Mesodesmidae, Mactridae, Cardiidae, Myidae, Corbulidae, Glycymeridae, Gastrochaenidae, Pholadidae, Teredinidae, Cryptodontidae, Ungulinidae (Diplodontidae), Lucinidae, Tellinidae, Scrobiculariidae, Cuspidariidae, Solenomyidae, Pandoridae, Verticordiidae, Lyonsiidae, Ceromyidae, Arcomyidae, Anatinidae, Poromyidae, Pholadomyidae e Clavagellidae). Carlo Clausen, Torino, 216 pp., 29 pl., available online at http://www.biodiversitylibrary.org/item/47316
page(s): 26 [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Grammatical gender Neuter, as based on the greek noun πέρας, meaning end or limit, which is neuter, Authors generally treat this name (which means "acute end") as feminine, possibly because it is commonly combined with specific epithets originally described as Mactra or Spisula, but this is incorrect. Only Glibert & van de Poel (1970) seem to have noticed the correct gender. [details]