Accepted by P. Castro: 9 Oct. 2013; published: 12 Nov. 2013 ZOOTAXA ISSN 1175-5326 (print edition) ISSN 1175-5334 (online edition) Copyright © 2013 Magnolia Press Zootaxa 3736 (2): 101–127 www.mapress.com/zootaxa/ Article 101 http://dx.doi.org/10.11646/zootaxa.3736.2.1 http://zoobank.org/urn:lsid:zoobank.org:pub:00C967E0-B88A-4041-B4EF-99EA5F81245F Names and publication dates of the Brachyura in F.É. Guérin (Guérin-Méneville) (Crustacea: Decapoda) MARTYN E. Y. LOW 1,4 , PETER K. L. NG 2 & NEAL L. EVENHUIS 3 1 Department of Marine and Environmental Sciences Graduate School of Engineering and Science, University of the Ryukyus, Senbaru, Nishihara, Okinawa 903-0213, Japan. Current address: Raffles Museum of Biodiversity Research, National University of Singapore, Science Drive 2, Singapore 117546, Republic of Singapore. E-mail: m.low@me.com 2 Tropical Marine Science Institute and Department of Biological Sciences, National University of Singapore, Kent Ridge, Singapore 119260, Republic of Singapore. E-mail: dbsngkl@nus.edu.sg 3 Department of Natural Sciences, Bishop Museum, 1525 Bernice Street, Honolulu, Hawai‘i 96817–2704, USA. E-mail: neale@bishopmuseum.org 4 Corresponding author Abstract The names and dates of the publications of Brachyura of Guérin (Guérin-Méneville from 1836) are reviewed, and previ- ously unidentified or overlooked names are identified. Several identical new names used in multiple publications by Guérin (also under the name Guérin-Méneville), and others that appeared in the same year necessitated the accurate de- termination of publication dates to establish priority. The authorships of three names should be credited to Guérin (1832): Gecarcinus lateralis (Gecarcinidae), Halimus aries (Majidae), and Libinia spinosa (Epialtidae), the first previously attrib- uted to Fréminville (1835), the last two to H. Milne Edwards (1834). The overlooked genus- and species-group names Cyclocarcinus pinnotheroides Guérin-Méneville, 1838, are determined to be senior subjective synonyms of the genus- and species-group names Hapalonotus reticulatus (De Man, 1879) (Pilumnidae). Applying Article 23.9.1 of the International Code of Zoological Nomenclature, precedence is reversed between the genus-group names and the correct name is Hapalonotus pinnotheroides (Guérin-Méneville, 1838). Current and widespread use of the genus-group name Thalamita Latreille, 1829 (31 March) (Portunidae) is threatened by the overlooked Thalamites Guérin, 1829 (21 March), and the pre- cedence of the names is also reversed to maintain usage of the former. The genus-group name Eurypodius Guérin (Inach- idae) is shown to have been established in 1828, not 1825. Included is a complete bibliography of the publications in which Guérin (also under Guérin-Méneville) established new names for Brachyura, with their accurate publication dates. Key words: Crabs, nomenclature, objective synonymy, subjective synonymy, priority, lectotype designation, reversal of precedence Introduction Félix Édouard Guérin (Guérin-Méneville after 1836, see below) established 22 species-group and four genus-group names for brachyuran crabs. Eleven of these species-group names are currently recognised as valid while the remainder are considered to be junior synonyms. Three of the four genus-group names are currently considered to be valid. The extant type material of Guérin (including that under “Guérin-Méneville”) are known to be deposited in the Muséum nationale d’Histoire naturelle, Paris (see Cleva et al. 2007) and the Academy of Natural Sciences of Drexel University, Philadelphia (see Spamer & Bogan 1993; 1994). The names “Guérin” and “Guérin-Méneville” Guérin changed his name to Guérin-Méneville in 1836 (see Cowan 1971: 21; Evenhuis 1997: 331; 2003a: 16