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Issue: Vol. 2289 No. 1: 13 Nov. 2009
Type: Articles
Published: 2009-11-13
DOI: 10.11646/zootaxa.2289.1.6
Page range: 61–67
Abstract views: 65
PDF downloaded: 13

Comments on the snake-eel genus Xyrias (Anguilliformes: Ophichthidae) with the description of a new species

California Academy of Sciences, San Francisco, California, U.S.A. 94118
Department of Aquaculture, National Taiwan Ocean University, No. 2, Pei-Ning Road, Keelung, Taiwan 202, R.O.C
Department of Aquaculture, National Taiwan Ocean University, No. 2, Pei-Ning Road, Keelung, Taiwan 202, R.O.C
Fish Ophichthidae Xyrias new species Taiwan

Abstract

Comments on the snake-eel genus Xyrias (Anguilliformes: Ophichthidae) with the description of a new species. Xyrias chioui, a new robust snake-eel species, subfamily Ophichthinae, is described on the basis of a specimen caught at 60–70 m depth on a benthic longline off Changbin, Taitung County, eastern Taiwan. It is distinguished from its congeners by having fewer vertebrae (126), 3 postorbital cephalic pores, and biserial rather than multiserial mandibular dentition. A key to the species of Xyrias is provided. Additional records of X. revulsus from the Arafura Sea and off New South Wales, Australia, extend its depth range from a few to 300 meters. The generic diagnosis of Xyrias is expanded such that the maxillary dentition ranges from a biserial to a multiserial condition.

References

  1. Anonymous. (1996) Fish of this month, Xyrias revulsus. Izu Oceanic Park Diving News, 8, 1. (In Japanese.)

    Blache, J. (1975) Contribution à la connaissance des Poissons anguilliformes de la côte occidentale d'Afrique. 15e note: compléments aux familles des Muraenidae, des Heterenchelyidae et des Ophichthidae. Bulletin de l'Institut Fondamental d'Afrique Noire (Sèrie A) Sciences Naturelles, 37, 708–740.

    Böhlke, E.B. (1982) Vertebral formulae of type specimens of eels (Pisces: Anguilliformes). Proceedings of the Academy of Natural Sciences of Philadelphia, 134, 31–49.

    Jordan, D.S. & Snyder, J.O. (1901) A review of the apodal fishes or eels of Japan, with descriptions of nineteen new species. Proceedings of the United States National Museum, 23, 837–890.

    McCosker, J.E. (1977) The osteology, classification, and relationships of the eel family Ophichthidae. Proceedings of the California Academy of Sciences (Series 4), 41, 1–123.

    McCosker, J.E. (1998) Snake-eels of the genus Xyrias (Anguilliformes: Ophichthidae). Cybium, 22, 7–13.

    McCosker, J.E., Böhlke, E.B. & Böhlke, J.E. (1989) Family Ophichthidae. In: Böhlke, E. B. (Ed.), Fishes of the Western North Atlantic, part 9, vol. 1. Memoirs of the Sears Foundation for Marine Research, New Haven, pp. 254–412.

    McCosker, J.E. & Randall, J.E. (2001) A revision of the snake-eel genus Brachysomophis (Anguilliformes: Ophichthidae), with the description of two new species and comments on the species of Mystriophis. Indo-Pacific Fishes, 33, 1–32.

    Norman, J.R. (1939) Fishes in The John Murray Expedition 1933–34, Scientific Reports, vol. 7. British Museum (Natural History), London, 116 pp.

    Tan, H.J. (1983) New records of fishes from China Sea. Investitgatio et Studium Naturae 1983, 25–26. (In Chinese.)