Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae Author Gasca, Rebeca 0000-0002-9716-1964 El Colegio de la Frontera Sur, Unidad Chetumal, Av. del Centenario km 5.5, Chetumal, Quintana Roo, 77014, Mexico. rebegasca @ gmail. com; https: // orcid. org / 0000 - 0002 - 9716 - 1964 & Currently retired. rebegasca@gmail.com Author Hendrickx, Michel E. Laboratorio de Invertebrados Bentónicos, Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, PO Box 811, Mazatlán, 82000 Sinaloa, Mexico. text Zootaxa 2022 2022-03-03 5105 2 219 236 journal article 20349 10.11646/zootaxa.5105.2.3 d9ad8d5b-dd70-4efe-8a01-76ea5babc6b8 1175-5326 6332529 2B46C765-C80B-437B-B8C2-95335D589E9F Streetsia porcella ( Claus, 1879 ) Oxycephalus porcellus Claus, 1879a: 194 (48). Streetsia porcella .— Brusca, 1981: 13 (list), 33 (key), fig. 23d, l; Vinogradov et al ., 1996: 511 (key), 516‒519, fig. 224; Gasca, 2009: 89 (tab. 1); Lavaniegos & Hereu, 2009: 152 (appendix); Gasca et al ., 2012: 126 (tab. 1); Lavaniegos, 2014: 5 (tab. 1); Zeidler, 2016: 93‒96 (passim), 96 (key). Streetsia intermedia Spandl, 1927: 188‒190 , figs. 20, 21 a‒l. Streetsia nyctiphanes Fage, 1934: 1631 . Material examined . 5M, 1F in four localities ( Fig. 5 ). TALUD III . St. 19 ( 25°12’00”N , 109°07’00”W ), August 20, 1991 , 2M, I-K, surface to 410 m (TD, 920 m ) (ICML-EMU-12979-A); St. 19B ( 25°18’24”N , 109°18’36”W ), August 20, 1991 , 1M, I-K from surface to 600 m (TD, 1890 m ) (ICML-EMU-12979-B). TALUD IV . St. 7 ( 22°00’22”N , 106°49’18”W ), August 23, 2000 , 1M, 1F, MN from surface to 500 m (TD, 1970 m ) (ECOSUR-10563); St. 15 ( 23°23’30”N , 107°47’48”W ), August 24, 2000 , 1M, MN from surface to 1500 m (TD, 2350 m ) (ICML-EMU-12980) . Distribution . Epipelagic in tropical and subtropical waters of all oceans; Mediterranean Sea ( Fage, 1960 ). In the eastern Pacific present in the Mexican portion of the California Current ( Lavaniegos & Hereu 2009 ) and the SE Gulf of California (this study). Remarks . The head of this species is shorter than in the other species of the genus and the body is more robust. Found mostly between 0 and 300 m depth ( Vinogradov et al . 1996 ). Not recorded previously by Siegel-Causey (1982) in the Gulf of California and not listed by García Madrigal (2007) for the tropical eastern Pacific, S. porcella had been consistently collected in the Mexican portion of the California Current ( Lavaniegos & Hereu 2009 , Lavaniegos 2014 ). During our survey it was recorded in four localities in the Gulf of California ( Fig. 5 ).